Updated to piwik/decompress 1.0 and install PEAR through Composer

PEAR is installed through Composer with the latest version of piwik/decompress anyway. I've removed it from the libs folder after comparing the files. `is_a()` is not deprecated anymore, and I couldn't find any usage of the modified methods `raiseError()` and `isError()` in HTML_Quickform.

I had to require pear/pear-core-minimal on top of pear/pear_exception because there is no transitive dependency. I have opened https://github.com/pear/PEAR_Exception/issues/8

8 files changed, 220 insertions, 1533 deletions

diff --git a/composer.json b/composer.json
index 959c0a7a34..7acbf4508f 100644
--- a/composer.json
+++ b/composer.json
@@ -43,7 +43,7 @@
         "tedivm/jshrink": "~0.5.1",
         "mustangostang/spyc": "~0.5.0",
         "piwik/device-detector": "~3.0",
-        "piwik/decompress": "~0.1.1",
+        "piwik/decompress": "~1.0",
         "piwik/network": "~0.1.0",
         "piwik/cache": "~0.2.5",
         "piwik/ini": "~1.0,>=1.0.3",
@@ -51,7 +51,9 @@
         "psr/log": "~1.0",
         "monolog/monolog": "~1.11",
         "symfony/monolog-bridge": "~2.6",
-        "symfony/event-dispatcher": "~2.6"
+        "symfony/event-dispatcher": "~2.6",
+        "pear/pear_exception": "~1.0.0",
+        "pear/pear-core-minimal": "~1.9.5"
     },
     "require-dev": {
         "aws/aws-sdk-php": "2.7.1",
diff --git a/composer.lock b/composer.lock
index 2d48b31a06..3607544b66 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "ad2f11fd442b91f4ac1e6a131d664f96",
+    "hash": "f0c9c70091696d6197a4c438b9c12860",
     "packages": [
         {
             "name": "container-interop/container-interop",
@@ -522,6 +522,213 @@
             "time": "2015-01-30 22:06:24"
         },
         {
+            "name": "pear/archive_tar",
+            "version": "1.3.15",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/pear/Archive_Tar.git",
+                "reference": "48ace7cdd7d8a9172d935dc2dd586df2d0f94779"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/pear/Archive_Tar/zipball/48ace7cdd7d8a9172d935dc2dd586df2d0f94779",
+                "reference": "48ace7cdd7d8a9172d935dc2dd586df2d0f94779",
+                "shasum": ""
+            },
+            "require": {
+                "pear/pear-core-minimal": "^1.9.5",
+                "php": ">=4.3.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "*"
+            },
+            "suggest": {
+                "ext-bz2": "bz2 compression support.",
+                "ext-xz": "lzma2 compression support.",
+                "ext-zlib": "Gzip compression support."
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Archive_Tar": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "include-path": [
+                "./"
+            ],
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Vincent Blavet",
+                    "email": "vincent@phpconcept.net"
+                },
+                {
+                    "name": "Greg Beaver",
+                    "email": "greg@chiaraquartet.net"
+                },
+                {
+                    "name": "Michiel Rook",
+                    "email": "mrook@php.net"
+                }
+            ],
+            "description": "Tar file management class",
+            "homepage": "https://github.com/pear/Archive_Tar",
+            "keywords": [
+                "archive",
+                "tar"
+            ],
+            "time": "2015-03-04 15:40:28"
+        },
+        {
+            "name": "pear/console_getopt",
+            "version": "v1.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/pear/Console_Getopt.git",
+                "reference": "ff3eecbbc5d6e9a243f70f7cf51ca7554e4bb470"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/pear/Console_Getopt/zipball/ff3eecbbc5d6e9a243f70f7cf51ca7554e4bb470",
+                "reference": "ff3eecbbc5d6e9a243f70f7cf51ca7554e4bb470",
+                "shasum": ""
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Console": "./"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "include-path": [
+                "./"
+            ],
+            "license": [
+                "BSD-2-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Greg Beaver",
+                    "email": "cellog@php.net",
+                    "role": "Helper"
+                },
+                {
+                    "name": "Andrei Zmievski",
+                    "email": "andrei@php.net",
+                    "role": "Lead"
+                },
+                {
+                    "name": "Stig Bakken",
+                    "email": "stig@php.net",
+                    "role": "Developer"
+                }
+            ],
+            "description": "More info available on: http://pear.php.net/package/Console_Getopt",
+            "time": "2015-02-22 13:26:45"
+        },
+        {
+            "name": "pear/pear-core-minimal",
+            "version": "v1.9.5",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/pear/pear-core-minimal.git",
+                "reference": "bdfefcacb3b388a1050a58eff9ba5a8f43de2411"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/pear/pear-core-minimal/zipball/bdfefcacb3b388a1050a58eff9ba5a8f43de2411",
+                "reference": "bdfefcacb3b388a1050a58eff9ba5a8f43de2411",
+                "shasum": ""
+            },
+            "require": {
+                "pear/console_getopt": "~1.3",
+                "pear/pear_exception": "~1.0"
+            },
+            "provide": {
+                "rsky/pear-core-min": "*"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "include-path": [
+                "src/"
+            ],
+            "license": [
+                "New BSD"
+            ],
+            "authors": [
+                {
+                    "name": "Christian Weiske",
+                    "email": "cweiske@php.net",
+                    "role": "Lead"
+                }
+            ],
+            "description": "Minimal set of PEAR core files to be used as composer dependency",
+            "time": "2015-02-10 20:55:39"
+        },
+        {
+            "name": "pear/pear_exception",
+            "version": "v1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/pear/PEAR_Exception.git",
+                "reference": "8c18719fdae000b690e3912be401c76e406dd13b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/pear/PEAR_Exception/zipball/8c18719fdae000b690e3912be401c76e406dd13b",
+                "reference": "8c18719fdae000b690e3912be401c76e406dd13b",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=4.4.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "*"
+            },
+            "type": "class",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "PEAR": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "include-path": [
+                "."
+            ],
+            "license": [
+                "BSD-2-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Helgi Thormar",
+                    "email": "dufuz@php.net"
+                },
+                {
+                    "name": "Greg Beaver",
+                    "email": "cellog@php.net"
+                }
+            ],
+            "description": "The PEAR Exception base class.",
+            "homepage": "https://github.com/pear/PEAR_Exception",
+            "keywords": [
+                "exception"
+            ],
+            "time": "2015-02-10 20:07:52"
+        },
+        {
             "name": "piwik/cache",
             "version": "0.2.5",
             "source": {
@@ -570,23 +777,24 @@
         },
         {
             "name": "piwik/decompress",
-            "version": "0.1.1",
+            "version": "1.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/piwik/component-decompress.git",
-                "reference": "1c7ad9696ac732a12868110b97938fc2f5d267fb"
+                "reference": "54d8a6f83b367d1fa7823a342b154c895528f818"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/piwik/component-decompress/zipball/1c7ad9696ac732a12868110b97938fc2f5d267fb",
-                "reference": "1c7ad9696ac732a12868110b97938fc2f5d267fb",
+                "url": "https://api.github.com/repos/piwik/component-decompress/zipball/54d8a6f83b367d1fa7823a342b154c895528f818",
+                "reference": "54d8a6f83b367d1fa7823a342b154c895528f818",
                 "shasum": ""
             },
             "require": {
+                "pear/archive_tar": "~1.3,>=1.3.15",
                 "php": ">=5.3.2"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.0"
+                "phpunit/phpunit": "~4.5"
             },
             "type": "library",
             "autoload": {
@@ -594,14 +802,14 @@
                     "Piwik\\Decompress\\": "src/"
                 },
                 "classmap": [
-                    "libs/"
+                    "libs/PclZip"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "LGPL-3.0"
             ],
-            "time": "2014-10-28 21:14:38"
+            "time": "2015-03-05 22:22:48"
         },
         {
             "name": "piwik/device-detector",
diff --git a/libs/PEAR.php b/libs/PEAR.php
deleted file mode 100644
index aa61ed4b2c..0000000000
--- a/libs/PEAR.php
+++ /dev/null
@@ -1,1063 +0,0 @@
-<?php
-/**
- * PEAR, the PHP Extension and Application Repository
- *
- * PEAR class and PEAR_Error class
- *
- * PHP versions 4 and 5
- *
- * @category   pear
- * @package    PEAR
- * @author     Sterling Hughes <sterling@php.net>
- * @author     Stig Bakken <ssb@php.net>
- * @author     Tomas V.V.Cox <cox@idecnet.com>
- * @author     Greg Beaver <cellog@php.net>
- * @copyright  1997-2010 The Authors
- * @license    http://opensource.org/licenses/bsd-license.php New BSD License
- * @version    CVS: $Id$
- * @link       http://pear.php.net/package/PEAR
- * @since      File available since Release 0.1
- */
-
-/**#@+
- * ERROR constants
- */
-define('PEAR_ERROR_RETURN',     1);
-define('PEAR_ERROR_PRINT',      2);
-define('PEAR_ERROR_TRIGGER',    4);
-define('PEAR_ERROR_DIE',        8);
-define('PEAR_ERROR_CALLBACK',  16);
-/**
- * WARNING: obsolete
- * @deprecated
- */
-define('PEAR_ERROR_EXCEPTION', 32);
-/**#@-*/
-define('PEAR_ZE2', (function_exists('version_compare') &&
-                    version_compare(zend_version(), "2-dev", "ge")));
-
-if (substr(PHP_OS, 0, 3) == 'WIN') {
-    define('OS_WINDOWS', true);
-    define('OS_UNIX',    false);
-    define('PEAR_OS',    'Windows');
-} else {
-    define('OS_WINDOWS', false);
-    define('OS_UNIX',    true);
-    define('PEAR_OS',    'Unix'); // blatant assumption
-}
-
-$GLOBALS['_PEAR_default_error_mode']     = PEAR_ERROR_RETURN;
-$GLOBALS['_PEAR_default_error_options']  = E_USER_NOTICE;
-$GLOBALS['_PEAR_destructor_object_list'] = array();
-$GLOBALS['_PEAR_shutdown_funcs']         = array();
-$GLOBALS['_PEAR_error_handler_stack']    = array();
-
-@ini_set('track_errors', true);
-
-/**
- * Base class for other PEAR classes.  Provides rudimentary
- * emulation of destructors.
- *
- * If you want a destructor in your class, inherit PEAR and make a
- * destructor method called _yourclassname (same name as the
- * constructor, but with a "_" prefix).  Also, in your constructor you
- * have to call the PEAR constructor: $this->PEAR();.
- * The destructor method will be called without parameters.  Note that
- * at in some SAPI implementations (such as Apache), any output during
- * the request shutdown (in which destructors are called) seems to be
- * discarded.  If you need to get any debug information from your
- * destructor, use error_log(), syslog() or something similar.
- *
- * IMPORTANT! To use the emulated destructors you need to create the
- * objects by reference: $obj =& new PEAR_child;
- *
- * @category   pear
- * @package    PEAR
- * @author     Stig Bakken <ssb@php.net>
- * @author     Tomas V.V. Cox <cox@idecnet.com>
- * @author     Greg Beaver <cellog@php.net>
- * @copyright  1997-2006 The PHP Group
- * @license    http://opensource.org/licenses/bsd-license.php New BSD License
- * @version    Release: 1.9.1
- * @link       http://pear.php.net/package/PEAR
- * @see        PEAR_Error
- * @since      Class available since PHP 4.0.2
- * @link        http://pear.php.net/manual/en/core.pear.php#core.pear.pear
- */
-class PEAR
-{
-    /**
-     * Whether to enable internal debug messages.
-     *
-     * @var     bool
-     * @access  private
-     */
-    var $_debug = false;
-
-    /**
-     * Default error mode for this object.
-     *
-     * @var     int
-     * @access  private
-     */
-    var $_default_error_mode = null;
-
-    /**
-     * Default error options used for this object when error mode
-     * is PEAR_ERROR_TRIGGER.
-     *
-     * @var     int
-     * @access  private
-     */
-    var $_default_error_options = null;
-
-    /**
-     * Default error handler (callback) for this object, if error mode is
-     * PEAR_ERROR_CALLBACK.
-     *
-     * @var     string
-     * @access  private
-     */
-    var $_default_error_handler = '';
-
-    /**
-     * Which class to use for error objects.
-     *
-     * @var     string
-     * @access  private
-     */
-    var $_error_class = 'PEAR_Error';
-
-    /**
-     * An array of expected errors.
-     *
-     * @var     array
-     * @access  private
-     */
-    var $_expected_errors = array();
-
-    /**
-     * Constructor.  Registers this object in
-     * $_PEAR_destructor_object_list for destructor emulation if a
-     * destructor object exists.
-     *
-     * @param string $error_class  (optional) which class to use for
-     *        error objects, defaults to PEAR_Error.
-     * @access public
-     * @return void
-     */
-    function PEAR($error_class = null)
-    {
-        $classname = strtolower(get_class($this));
-        if ($this->_debug) {
-            print "PEAR constructor called, class=$classname\n";
-        }
-
-        if ($error_class !== null) {
-            $this->_error_class = $error_class;
-        }
-
-        while ($classname && strcasecmp($classname, "pear")) {
-            $destructor = "_$classname";
-            if (method_exists($this, $destructor)) {
-                global $_PEAR_destructor_object_list;
-                $_PEAR_destructor_object_list[] = &$this;
-                if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) {
-                    register_shutdown_function("_PEAR_call_destructors");
-                    $GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true;
-                }
-                break;
-            } else {
-                $classname = get_parent_class($classname);
-            }
-        }
-    }
-
-    /**
-     * Destructor (the emulated type of...).  Does nothing right now,
-     * but is included for forward compatibility, so subclass
-     * destructors should always call it.
-     *
-     * See the note in the class desciption about output from
-     * destructors.
-     *
-     * @access public
-     * @return void
-     */
-    function _PEAR() {
-        if ($this->_debug) {
-            printf("PEAR destructor called, class=%s\n", strtolower(get_class($this)));
-        }
-    }
-
-    /**
-    * If you have a class that's mostly/entirely static, and you need static
-    * properties, you can use this method to simulate them. Eg. in your method(s)
-    * do this: $myVar = &PEAR::getStaticProperty('myclass', 'myVar');
-    * You MUST use a reference, or they will not persist!
-    *
-    * @access public
-    * @param  string $class  The calling classname, to prevent clashes
-    * @param  string $var    The variable to retrieve.
-    * @return mixed   A reference to the variable. If not set it will be
-    *                 auto initialised to NULL.
-    */
-    function &getStaticProperty($class, $var)
-    {
-        static $properties;
-        if (!isset($properties[$class])) {
-            $properties[$class] = array();
-        }
-
-        if (!array_key_exists($var, $properties[$class])) {
-            $properties[$class][$var] = null;
-        }
-
-        return $properties[$class][$var];
-    }
-
-    /**
-    * Use this function to register a shutdown method for static
-    * classes.
-    *
-    * @access public
-    * @param  mixed $func  The function name (or array of class/method) to call
-    * @param  mixed $args  The arguments to pass to the function
-    * @return void
-    */
-    function registerShutdownFunc($func, $args = array())
-    {
-        // if we are called statically, there is a potential
-        // that no shutdown func is registered.  Bug #6445
-        if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) {
-            register_shutdown_function("_PEAR_call_destructors");
-            $GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true;
-        }
-        $GLOBALS['_PEAR_shutdown_funcs'][] = array($func, $args);
-    }
-
-    /**
-     * Tell whether a value is a PEAR error.
-     *
-     * @param   mixed $data   the value to test
-     * @param   int   $code   if $data is an error object, return true
-     *                        only if $code is a string and
-     *                        $obj->getMessage() == $code or
-     *                        $code is an integer and $obj->getCode() == $code
-     * @access  public
-     * @return  bool    true if parameter is an error
-     */
-    static function isError($data, $code = null)
-    {
-        if (!($data instanceof PEAR_Error)) {
-            return false;
-        }
-
-        if (is_null($code)) {
-            return true;
-        } elseif (is_string($code)) {
-            return $data->getMessage() == $code;
-        }
-
-        return $data->getCode() == $code;
-    }
-
-    /**
-     * Sets how errors generated by this object should be handled.
-     * Can be invoked both in objects and statically.  If called
-     * statically, setErrorHandling sets the default behaviour for all
-     * PEAR objects.  If called in an object, setErrorHandling sets
-     * the default behaviour for that object.
-     *
-     * @param int $mode
-     *        One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
-     *        PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE,
-     *        PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION.
-     *
-     * @param mixed $options
-     *        When $mode is PEAR_ERROR_TRIGGER, this is the error level (one
-     *        of E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
-     *
-     *        When $mode is PEAR_ERROR_CALLBACK, this parameter is expected
-     *        to be the callback function or method.  A callback
-     *        function is a string with the name of the function, a
-     *        callback method is an array of two elements: the element
-     *        at index 0 is the object, and the element at index 1 is
-     *        the name of the method to call in the object.
-     *
-     *        When $mode is PEAR_ERROR_PRINT or PEAR_ERROR_DIE, this is
-     *        a printf format string used when printing the error
-     *        message.
-     *
-     * @access public
-     * @return void
-     * @see PEAR_ERROR_RETURN
-     * @see PEAR_ERROR_PRINT
-     * @see PEAR_ERROR_TRIGGER
-     * @see PEAR_ERROR_DIE
-     * @see PEAR_ERROR_CALLBACK
-     * @see PEAR_ERROR_EXCEPTION
-     *
-     * @since PHP 4.0.5
-     */
-    function setErrorHandling($mode = null, $options = null)
-    {
-        if (isset($this) && ($this instanceof PEAR)) {
-            $setmode     = &$this->_default_error_mode;
-            $setoptions  = &$this->_default_error_options;
-        } else {
-            $setmode     = &$GLOBALS['_PEAR_default_error_mode'];
-            $setoptions  = &$GLOBALS['_PEAR_default_error_options'];
-        }
-
-        switch ($mode) {
-            case PEAR_ERROR_EXCEPTION:
-            case PEAR_ERROR_RETURN:
-            case PEAR_ERROR_PRINT:
-            case PEAR_ERROR_TRIGGER:
-            case PEAR_ERROR_DIE:
-            case null:
-                $setmode = $mode;
-                $setoptions = $options;
-                break;
-
-            case PEAR_ERROR_CALLBACK:
-                $setmode = $mode;
-                // class/object method callback
-                if (is_callable($options)) {
-                    $setoptions = $options;
-                } else {
-                    trigger_error("invalid error callback", E_USER_WARNING);
-                }
-                break;
-
-            default:
-                trigger_error("invalid error mode", E_USER_WARNING);
-                break;
-        }
-    }
-
-    /**
-     * This method is used to tell which errors you expect to get.
-     * Expected errors are always returned with error mode
-     * PEAR_ERROR_RETURN.  Expected error codes are stored in a stack,
-     * and this method pushes a new element onto it.  The list of
-     * expected errors are in effect until they are popped off the
-     * stack with the popExpect() method.
-     *
-     * Note that this method can not be called statically
-     *
-     * @param mixed $code a single error code or an array of error codes to expect
-     *
-     * @return int     the new depth of the "expected errors" stack
-     * @access public
-     */
-    function expectError($code = '*')
-    {
-        if (is_array($code)) {
-            array_push($this->_expected_errors, $code);
-        } else {
-            array_push($this->_expected_errors, array($code));
-        }
-        return count($this->_expected_errors);
-    }
-
-    /**
-     * This method pops one element off the expected error codes
-     * stack.
-     *
-     * @return array   the list of error codes that were popped
-     */
-    function popExpect()
-    {
-        return array_pop($this->_expected_errors);
-    }
-
-    /**
-     * This method checks unsets an error code if available
-     *
-     * @param mixed error code
-     * @return bool true if the error code was unset, false otherwise
-     * @access private
-     * @since PHP 4.3.0
-     */
-    function _checkDelExpect($error_code)
-    {
-        $deleted = false;
-        foreach ($this->_expected_errors as $key => $error_array) {
-            if (in_array($error_code, $error_array)) {
-                unset($this->_expected_errors[$key][array_search($error_code, $error_array)]);
-                $deleted = true;
-            }
-
-            // clean up empty arrays
-            if (0 == count($this->_expected_errors[$key])) {
-                unset($this->_expected_errors[$key]);
-            }
-        }
-
-        return $deleted;
-    }
-
-    /**
-     * This method deletes all occurences of the specified element from
-     * the expected error codes stack.
-     *
-     * @param  mixed $error_code error code that should be deleted
-     * @return mixed list of error codes that were deleted or error
-     * @access public
-     * @since PHP 4.3.0
-     */
-    function delExpect($error_code)
-    {
-        $deleted = false;
-        if ((is_array($error_code) && (0 != count($error_code)))) {
-            // $error_code is a non-empty array here; we walk through it trying
-            // to unset all values
-            foreach ($error_code as $key => $error) {
-                $deleted =  $this->_checkDelExpect($error) ? true : false;
-            }
-
-            return $deleted ? true : PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
-        } elseif (!empty($error_code)) {
-            // $error_code comes alone, trying to unset it
-            if ($this->_checkDelExpect($error_code)) {
-                return true;
-            }
-
-            return PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
-        }
-
-        // $error_code is empty
-        return PEAR::raiseError("The expected error you submitted is empty"); // IMPROVE ME
-    }
-
-    /**
-     * This method is a wrapper that returns an instance of the
-     * configured error class with this object's default error
-     * handling applied.  If the $mode and $options parameters are not
-     * specified, the object's defaults are used.
-     *
-     * @param mixed $message a text error message or a PEAR error object
-     *
-     * @param int $code      a numeric error code (it is up to your class
-     *                  to define these if you want to use codes)
-     *
-     * @param int $mode      One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
-     *                  PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE,
-     *                  PEAR_ERROR_CALLBACK, PEAR_ERROR_EXCEPTION.
-     *
-     * @param mixed $options If $mode is PEAR_ERROR_TRIGGER, this parameter
-     *                  specifies the PHP-internal error level (one of
-     *                  E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
-     *                  If $mode is PEAR_ERROR_CALLBACK, this
-     *                  parameter specifies the callback function or
-     *                  method.  In other error modes this parameter
-     *                  is ignored.
-     *
-     * @param string $userinfo If you need to pass along for example debug
-     *                  information, this parameter is meant for that.
-     *
-     * @param string $error_class The returned error object will be
-     *                  instantiated from this class, if specified.
-     *
-     * @param bool $skipmsg If true, raiseError will only pass error codes,
-     *                  the error message parameter will be dropped.
-     *
-     * @access public
-     * @return object   a PEAR error object
-     * @see PEAR::setErrorHandling
-     * @since PHP 4.0.5
-     */
-    static function &raiseError($message = null,
-                         $code = null,
-                         $mode = null,
-                         $options = null,
-                         $userinfo = null,
-                         $error_class = null,
-                         $skipmsg = false)
-    {
-        // The error is yet a PEAR error object
-        if (is_object($message)) {
-            $code        = $message->getCode();
-            $userinfo    = $message->getUserInfo();
-            $error_class = $message->getType();
-            $message->error_message_prefix = '';
-            $message     = $message->getMessage();
-        }
-
-        if (
-            isset($this) &&
-            isset($this->_expected_errors) &&
-            count($this->_expected_errors) > 0 &&
-            count($exp = end($this->_expected_errors))
-        ) {
-            if ($exp[0] == "*" ||
-                (is_int(reset($exp)) && in_array($code, $exp)) ||
-                (is_string(reset($exp)) && in_array($message, $exp))
-            ) {
-                $mode = PEAR_ERROR_RETURN;
-            }
-        }
-
-        // No mode given, try global ones
-        if ($mode === null) {
-            // Class error handler
-            if (isset($this) && isset($this->_default_error_mode)) {
-                $mode    = $this->_default_error_mode;
-                $options = $this->_default_error_options;
-            // Global error handler
-            } elseif (isset($GLOBALS['_PEAR_default_error_mode'])) {
-                $mode    = $GLOBALS['_PEAR_default_error_mode'];
-                $options = $GLOBALS['_PEAR_default_error_options'];
-            }
-        }
-
-        if ($error_class !== null) {
-            $ec = $error_class;
-        } elseif (isset($this) && isset($this->_error_class)) {
-            $ec = $this->_error_class;
-        } else {
-            $ec = 'PEAR_Error';
-        }
-
-        if (intval(PHP_VERSION) < 5) {
-            // little non-eval hack to fix bug #12147
-            include dirname(__FILE__) . '/PEAR/FixPHP5PEARWarnings.php';
-            return $a;
-        }
-
-        if ($skipmsg) {
-            $a = new $ec($code, $mode, $options, $userinfo);
-        } else {
-            $a = new $ec($message, $code, $mode, $options, $userinfo);
-        }
-
-        return $a;
-    }
-
-    /**
-     * Simpler form of raiseError with fewer options.  In most cases
-     * message, code and userinfo are enough.
-     *
-     * @param mixed $message a text error message or a PEAR error object
-     *
-     * @param int $code      a numeric error code (it is up to your class
-     *                  to define these if you want to use codes)
-     *
-     * @param string $userinfo If you need to pass along for example debug
-     *                  information, this parameter is meant for that.
-     *
-     * @access public
-     * @return object   a PEAR error object
-     * @see PEAR::raiseError
-     */
-    function &throwError($message = null, $code = null, $userinfo = null)
-    {
-        if (isset($this) && ($this instanceof PEAR)) {
-            $a = &$this->raiseError($message, $code, null, null, $userinfo);
-            return $a;
-        }
-
-        $a = &PEAR::raiseError($message, $code, null, null, $userinfo);
-        return $a;
-    }
-
-    function staticPushErrorHandling($mode, $options = null)
-    {
-        $stack       = &$GLOBALS['_PEAR_error_handler_stack'];
-        $def_mode    = &$GLOBALS['_PEAR_default_error_mode'];
-        $def_options = &$GLOBALS['_PEAR_default_error_options'];
-        $stack[] = array($def_mode, $def_options);
-        switch ($mode) {
-            case PEAR_ERROR_EXCEPTION:
-            case PEAR_ERROR_RETURN:
-            case PEAR_ERROR_PRINT:
-            case PEAR_ERROR_TRIGGER:
-            case PEAR_ERROR_DIE:
-            case null:
-                $def_mode = $mode;
-                $def_options = $options;
-                break;
-
-            case PEAR_ERROR_CALLBACK:
-                $def_mode = $mode;
-                // class/object method callback
-                if (is_callable($options)) {
-                    $def_options = $options;
-                } else {
-                    trigger_error("invalid error callback", E_USER_WARNING);
-                }
-                break;
-
-            default:
-                trigger_error("invalid error mode", E_USER_WARNING);
-                break;
-        }
-        $stack[] = array($mode, $options);
-        return true;
-    }
-
-    function staticPopErrorHandling()
-    {
-        $stack = &$GLOBALS['_PEAR_error_handler_stack'];
-        $setmode     = &$GLOBALS['_PEAR_default_error_mode'];
-        $setoptions  = &$GLOBALS['_PEAR_default_error_options'];
-        array_pop($stack);
-        list($mode, $options) = $stack[sizeof($stack) - 1];
-        array_pop($stack);
-        switch ($mode) {
-            case PEAR_ERROR_EXCEPTION:
-            case PEAR_ERROR_RETURN:
-            case PEAR_ERROR_PRINT:
-            case PEAR_ERROR_TRIGGER:
-            case PEAR_ERROR_DIE:
-            case null:
-                $setmode = $mode;
-                $setoptions = $options;
-                break;
-
-            case PEAR_ERROR_CALLBACK:
-                $setmode = $mode;
-                // class/object method callback
-                if (is_callable($options)) {
-                    $setoptions = $options;
-                } else {
-                    trigger_error("invalid error callback", E_USER_WARNING);
-                }
-                break;
-
-            default:
-                trigger_error("invalid error mode", E_USER_WARNING);
-                break;
-        }
-        return true;
-    }
-
-    /**
-     * Push a new error handler on top of the error handler options stack. With this
-     * you can easily override the actual error handler for some code and restore
-     * it later with popErrorHandling.
-     *
-     * @param mixed $mode (same as setErrorHandling)
-     * @param mixed $options (same as setErrorHandling)
-     *
-     * @return bool Always true
-     *
-     * @see PEAR::setErrorHandling
-     */
-    function pushErrorHandling($mode, $options = null)
-    {
-        $stack = &$GLOBALS['_PEAR_error_handler_stack'];
-        if (isset($this) && ($this instanceof PEAR)) {
-            $def_mode    = &$this->_default_error_mode;
-            $def_options = &$this->_default_error_options;
-        } else {
-            $def_mode    = &$GLOBALS['_PEAR_default_error_mode'];
-            $def_options = &$GLOBALS['_PEAR_default_error_options'];
-        }
-        $stack[] = array($def_mode, $def_options);
-
-        if (isset($this) && ($this instanceof PEAR)) {
-            $this->setErrorHandling($mode, $options);
-        } else {
-            PEAR::setErrorHandling($mode, $options);
-        }
-        $stack[] = array($mode, $options);
-        return true;
-    }
-
-    /**
-    * Pop the last error handler used
-    *
-    * @return bool Always true
-    *
-    * @see PEAR::pushErrorHandling
-    */
-    function popErrorHandling()
-    {
-        $stack = &$GLOBALS['_PEAR_error_handler_stack'];
-        array_pop($stack);
-        list($mode, $options) = $stack[sizeof($stack) - 1];
-        array_pop($stack);
-        if (isset($this) && ($this instanceof PEAR)) {
-            $this->setErrorHandling($mode, $options);
-        } else {
-            PEAR::setErrorHandling($mode, $options);
-        }
-        return true;
-    }
-
-    /**
-    * OS independant PHP extension load. Remember to take care
-    * on the correct extension name for case sensitive OSes.
-    *
-    * @param string $ext The extension name
-    * @return bool Success or not on the dl() call
-    */
-    function loadExtension($ext)
-    {
-        if (extension_loaded($ext)) {
-            return true;
-        }
-
-        // if either returns true dl() will produce a FATAL error, stop that
-        if (
-            function_exists('dl') === false ||
-            ini_get('enable_dl') != 1 ||
-            ini_get('safe_mode') == 1
-        ) {
-            return false;
-        }
-
-        if (OS_WINDOWS) {
-            $suffix = '.dll';
-        } elseif (PHP_OS == 'HP-UX') {
-            $suffix = '.sl';
-        } elseif (PHP_OS == 'AIX') {
-            $suffix = '.a';
-        } elseif (PHP_OS == 'OSX') {
-            $suffix = '.bundle';
-        } else {
-            $suffix = '.so';
-        }
-
-        return @dl('php_'.$ext.$suffix) || @dl($ext.$suffix);
-    }
-}
-
-if (PEAR_ZE2) {
-    include_once dirname(__FILE__) . '/PEAR5.php';
-}
-
-function _PEAR_call_destructors()
-{
-    global $_PEAR_destructor_object_list;
-    if (is_array($_PEAR_destructor_object_list) &&
-        sizeof($_PEAR_destructor_object_list))
-    {
-        reset($_PEAR_destructor_object_list);
-        if (PEAR_ZE2) {
-            $destructLifoExists = PEAR5::getStaticProperty('PEAR', 'destructlifo');
-        } else {
-            $destructLifoExists = PEAR::getStaticProperty('PEAR', 'destructlifo');
-        }
-
-        if ($destructLifoExists) {
-            $_PEAR_destructor_object_list = array_reverse($_PEAR_destructor_object_list);
-        }
-
-        while (list($k, $objref) = each($_PEAR_destructor_object_list)) {
-            $classname = get_class($objref);
-            while ($classname) {
-                $destructor = "_$classname";
-                if (method_exists($objref, $destructor)) {
-                    $objref->$destructor();
-                    break;
-                } else {
-                    $classname = get_parent_class($classname);
-                }
-            }
-        }
-        // Empty the object list to ensure that destructors are
-        // not called more than once.
-        $_PEAR_destructor_object_list = array();
-    }
-
-    // Now call the shutdown functions
-    if (
-        isset($GLOBALS['_PEAR_shutdown_funcs']) &&
-        is_array($GLOBALS['_PEAR_shutdown_funcs']) &&
-        !empty($GLOBALS['_PEAR_shutdown_funcs'])
-    ) {
-        foreach ($GLOBALS['_PEAR_shutdown_funcs'] as $value) {
-            call_user_func_array($value[0], $value[1]);
-        }
-    }
-}
-
-/**
- * Standard PEAR error class for PHP 4
- *
- * This class is supserseded by {@link PEAR_Exception} in PHP 5
- *
- * @category   pear
- * @package    PEAR
- * @author     Stig Bakken <ssb@php.net>
- * @author     Tomas V.V. Cox <cox@idecnet.com>
- * @author     Gregory Beaver <cellog@php.net>
- * @copyright  1997-2006 The PHP Group
- * @license    http://opensource.org/licenses/bsd-license.php New BSD License
- * @version    Release: 1.9.1
- * @link       http://pear.php.net/manual/en/core.pear.pear-error.php
- * @see        PEAR::raiseError(), PEAR::throwError()
- * @since      Class available since PHP 4.0.2
- */
-class PEAR_Error
-{
-    var $error_message_prefix = '';
-    var $mode                 = PEAR_ERROR_RETURN;
-    var $level                = E_USER_NOTICE;
-    var $code                 = -1;
-    var $message              = '';
-    var $userinfo             = '';
-    var $backtrace            = null;
-
-    /**
-     * PEAR_Error constructor
-     *
-     * @param string $message  message
-     *
-     * @param int $code     (optional) error code
-     *
-     * @param int $mode     (optional) error mode, one of: PEAR_ERROR_RETURN,
-     * PEAR_ERROR_PRINT, PEAR_ERROR_DIE, PEAR_ERROR_TRIGGER,
-     * PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION
-     *
-     * @param mixed $options   (optional) error level, _OR_ in the case of
-     * PEAR_ERROR_CALLBACK, the callback function or object/method
-     * tuple.
-     *
-     * @param string $userinfo (optional) additional user/debug info
-     *
-     * @access public
-     *
-     */
-    function PEAR_Error($message = 'unknown error', $code = null,
-                        $mode = null, $options = null, $userinfo = null)
-    {
-        if ($mode === null) {
-            $mode = PEAR_ERROR_RETURN;
-        }
-        $this->message   = $message;
-        $this->code      = $code;
-        $this->mode      = $mode;
-        $this->userinfo  = $userinfo;
-
-        if (PEAR_ZE2) {
-            $skiptrace = PEAR5::getStaticProperty('PEAR_Error', 'skiptrace');
-        } else {
-            $skiptrace = PEAR::getStaticProperty('PEAR_Error', 'skiptrace');
-        }
-
-        if (!$skiptrace) {
-            $this->backtrace = debug_backtrace();
-            if (isset($this->backtrace[0]) && isset($this->backtrace[0]['object'])) {
-                unset($this->backtrace[0]['object']);
-            }
-        }
-
-        if ($mode & PEAR_ERROR_CALLBACK) {
-            $this->level = E_USER_NOTICE;
-            $this->callback = $options;
-        } else {
-            if ($options === null) {
-                $options = E_USER_NOTICE;
-            }
-
-            $this->level = $options;
-            $this->callback = null;
-        }
-
-        if ($this->mode & PEAR_ERROR_PRINT) {
-            if (is_null($options) || is_int($options)) {
-                $format = "%s";
-            } else {
-                $format = $options;
-            }
-
-            printf($format, $this->getMessage());
-        }
-
-        if ($this->mode & PEAR_ERROR_TRIGGER) {
-            trigger_error($this->getMessage(), $this->level);
-        }
-
-        if ($this->mode & PEAR_ERROR_DIE) {
-            $msg = $this->getMessage();
-            if (is_null($options) || is_int($options)) {
-                $format = "%s";
-                if (substr($msg, -1) != "\n") {
-                    $msg .= "\n";
-                }
-            } else {
-                $format = $options;
-            }
-            die(sprintf($format, $msg));
-        }
-
-        if ($this->mode & PEAR_ERROR_CALLBACK && is_callable($this->callback)) {
-            call_user_func($this->callback, $this);
-        }
-
-        if ($this->mode & PEAR_ERROR_EXCEPTION) {
-            trigger_error("PEAR_ERROR_EXCEPTION is obsolete, use class PEAR_Exception for exceptions", E_USER_WARNING);
-            eval('$e = new Exception($this->message, $this->code);throw($e);');
-        }
-    }
-
-    /**
-     * Get the error mode from an error object.
-     *
-     * @return int error mode
-     * @access public
-     */
-    function getMode()
-    {
-        return $this->mode;
-    }
-
-    /**
-     * Get the callback function/method from an error object.
-     *
-     * @return mixed callback function or object/method array
-     * @access public
-     */
-    function getCallback()
-    {
-        return $this->callback;
-    }
-
-    /**
-     * Get the error message from an error object.
-     *
-     * @return  string  full error message
-     * @access public
-     */
-    function getMessage()
-    {
-        return ($this->error_message_prefix . $this->message);
-    }
-
-    /**
-     * Get error code from an error object
-     *
-     * @return int error code
-     * @access public
-     */
-     function getCode()
-     {
-        return $this->code;
-     }
-
-    /**
-     * Get the name of this error/exception.
-     *
-     * @return string error/exception name (type)
-     * @access public
-     */
-    function getType()
-    {
-        return get_class($this);
-    }
-
-    /**
-     * Get additional user-supplied information.
-     *
-     * @return string user-supplied information
-     * @access public
-     */
-    function getUserInfo()
-    {
-        return $this->userinfo;
-    }
-
-    /**
-     * Get additional debug information supplied by the application.
-     *
-     * @return string debug information
-     * @access public
-     */
-    function getDebugInfo()
-    {
-        return $this->getUserInfo();
-    }
-
-    /**
-     * Get the call backtrace from where the error was generated.
-     * Supported with PHP 4.3.0 or newer.
-     *
-     * @param int $frame (optional) what frame to fetch
-     * @return array Backtrace, or NULL if not available.
-     * @access public
-     */
-    function getBacktrace($frame = null)
-    {
-        if (defined('PEAR_IGNORE_BACKTRACE')) {
-            return null;
-        }
-        if ($frame === null) {
-            return $this->backtrace;
-        }
-        return $this->backtrace[$frame];
-    }
-
-    function addUserInfo($info)
-    {
-        if (empty($this->userinfo)) {
-            $this->userinfo = $info;
-        } else {
-            $this->userinfo .= " ** $info";
-        }
-    }
-
-    function __toString()
-    {
-        return $this->getMessage();
-    }
-
-    /**
-     * Make a string representation of this object.
-     *
-     * @return string a string with an object summary
-     * @access public
-     */
-    function toString()
-    {
-        $modes = array();
-        $levels = array(E_USER_NOTICE  => 'notice',
-                        E_USER_WARNING => 'warning',
-                        E_USER_ERROR   => 'error');
-        if ($this->mode & PEAR_ERROR_CALLBACK) {
-            if (is_array($this->callback)) {
-                $callback = (is_object($this->callback[0]) ?
-                    strtolower(get_class($this->callback[0])) :
-                    $this->callback[0]) . '::' .
-                    $this->callback[1];
-            } else {
-                $callback = $this->callback;
-            }
-            return sprintf('[%s: message="%s" code=%d mode=callback '.
-                           'callback=%s prefix="%s" info="%s"]',
-                           strtolower(get_class($this)), $this->message, $this->code,
-                           $callback, $this->error_message_prefix,
-                           $this->userinfo);
-        }
-        if ($this->mode & PEAR_ERROR_PRINT) {
-            $modes[] = 'print';
-        }
-        if ($this->mode & PEAR_ERROR_TRIGGER) {
-            $modes[] = 'trigger';
-        }
-        if ($this->mode & PEAR_ERROR_DIE) {
-            $modes[] = 'die';
-        }
-        if ($this->mode & PEAR_ERROR_RETURN) {
-            $modes[] = 'return';
-        }
-        return sprintf('[%s: message="%s" code=%d mode=%s level=%s '.
-                       'prefix="%s" info="%s"]',
-                       strtolower(get_class($this)), $this->message, $this->code,
-                       implode("|", $modes), $levels[$this->level],
-                       $this->error_message_prefix,
-                       $this->userinfo);
-    }
-}
-
-/*
- * Local Variables:
- * mode: php
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- */
diff --git a/libs/PEAR/Exception.php b/libs/PEAR/Exception.php
deleted file mode 100644
index 77743ef210..0000000000
--- a/libs/PEAR/Exception.php
+++ /dev/null
@@ -1,389 +0,0 @@
-<?php
-/* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */
-/**
- * PEAR_Exception
- *
- * PHP versions 4 and 5
- *
- * @category   pear
- * @package    PEAR
- * @author     Tomas V. V. Cox <cox@idecnet.com>
- * @author     Hans Lellelid <hans@velum.net>
- * @author     Bertrand Mansion <bmansion@mamasam.com>
- * @author     Greg Beaver <cellog@php.net>
- * @copyright  1997-2009 The Authors
- * @license    http://opensource.org/licenses/bsd-license.php New BSD License
- * @version    CVS: $Id: Exception.php 296939 2010-03-27 16:24:43Z dufuz $
- * @link       http://pear.php.net/package/PEAR
- * @since      File available since Release 1.3.3
- */
-
-
-/**
- * Base PEAR_Exception Class
- *
- * 1) Features:
- *
- * - Nestable exceptions (throw new PEAR_Exception($msg, $prev_exception))
- * - Definable triggers, shot when exceptions occur
- * - Pretty and informative error messages
- * - Added more context info available (like class, method or cause)
- * - cause can be a PEAR_Exception or an array of mixed
- *   PEAR_Exceptions/PEAR_ErrorStack warnings
- * - callbacks for specific exception classes and their children
- *
- * 2) Ideas:
- *
- * - Maybe a way to define a 'template' for the output
- *
- * 3) Inherited properties from PHP Exception Class:
- *
- * protected $message
- * protected $code
- * protected $line
- * protected $file
- * private   $trace
- *
- * 4) Inherited methods from PHP Exception Class:
- *
- * __clone
- * __construct
- * getMessage
- * getCode
- * getFile
- * getLine
- * getTraceSafe
- * getTraceSafeAsString
- * __toString
- *
- * 5) Usage example
- *
- * <code>
- *  require_once 'PEAR/Exception.php';
- *
- *  class Test {
- *     function foo() {
- *         throw new PEAR_Exception('Error Message', ERROR_CODE);
- *     }
- *  }
- *
- *  function myLogger($pear_exception) {
- *     echo $pear_exception->getMessage();
- *  }
- *  // each time a exception is thrown the 'myLogger' will be called
- *  // (its use is completely optional)
- *  PEAR_Exception::addObserver('myLogger');
- *  $test = new Test;
- *  try {
- *     $test->foo();
- *  } catch (PEAR_Exception $e) {
- *     print $e;
- *  }
- * </code>
- *
- * @category   pear
- * @package    PEAR
- * @author     Tomas V.V.Cox <cox@idecnet.com>
- * @author     Hans Lellelid <hans@velum.net>
- * @author     Bertrand Mansion <bmansion@mamasam.com>
- * @author     Greg Beaver <cellog@php.net>
- * @copyright  1997-2009 The Authors
- * @license    http://opensource.org/licenses/bsd-license.php New BSD License
- * @version    Release: 1.9.1
- * @link       http://pear.php.net/package/PEAR
- * @since      Class available since Release 1.3.3
- *
- */
-class PEAR_Exception extends Exception
-{
-    const OBSERVER_PRINT = -2;
-    const OBSERVER_TRIGGER = -4;
-    const OBSERVER_DIE = -8;
-    protected $cause;
-    private static $_observers = array();
-    private static $_uniqueid = 0;
-    private $_trace;
-
-    /**
-     * Supported signatures:
-     *  - PEAR_Exception(string $message);
-     *  - PEAR_Exception(string $message, int $code);
-     *  - PEAR_Exception(string $message, Exception $cause);
-     *  - PEAR_Exception(string $message, Exception $cause, int $code);
-     *  - PEAR_Exception(string $message, PEAR_Error $cause);
-     *  - PEAR_Exception(string $message, PEAR_Error $cause, int $code);
-     *  - PEAR_Exception(string $message, array $causes);
-     *  - PEAR_Exception(string $message, array $causes, int $code);
-     * @param string exception message
-     * @param int|Exception|PEAR_Error|array|null exception cause
-     * @param int|null exception code or null
-     */
-    public function __construct($message, $p2 = null, $p3 = null)
-    {
-        if (is_int($p2)) {
-            $code = $p2;
-            $this->cause = null;
-        } elseif (is_object($p2) || is_array($p2)) {
-            // using is_object allows both Exception and PEAR_Error
-            if (is_object($p2) && !($p2 instanceof Exception)) {
-                if (!class_exists('PEAR_Error') || !($p2 instanceof PEAR_Error)) {
-                    throw new PEAR_Exception('exception cause must be Exception, ' .
-                        'array, or PEAR_Error');
-                }
-            }
-            $code = $p3;
-            if (is_array($p2) && isset($p2['message'])) {
-                // fix potential problem of passing in a single warning
-                $p2 = array($p2);
-            }
-            $this->cause = $p2;
-        } else {
-            $code = null;
-            $this->cause = null;
-        }
-        parent::__construct($message, $code);
-        $this->signal();
-    }
-
-    /**
-     * @param mixed $callback  - A valid php callback, see php func is_callable()
-     *                         - A PEAR_Exception::OBSERVER_* constant
-     *                         - An array(const PEAR_Exception::OBSERVER_*,
-     *                           mixed $options)
-     * @param string $label    The name of the observer. Use this if you want
-     *                         to remove it later with removeObserver()
-     */
-    public static function addObserver($callback, $label = 'default')
-    {
-        self::$_observers[$label] = $callback;
-    }
-
-    public static function removeObserver($label = 'default')
-    {
-        unset(self::$_observers[$label]);
-    }
-
-    /**
-     * @return int unique identifier for an observer
-     */
-    public static function getUniqueId()
-    {
-        return self::$_uniqueid++;
-    }
-
-    private function signal()
-    {
-        foreach (self::$_observers as $func) {
-            if (is_callable($func)) {
-                call_user_func($func, $this);
-                continue;
-            }
-            settype($func, 'array');
-            switch ($func[0]) {
-                case self::OBSERVER_PRINT :
-                    $f = (isset($func[1])) ? $func[1] : '%s';
-                    printf($f, $this->getMessage());
-                    break;
-                case self::OBSERVER_TRIGGER :
-                    $f = (isset($func[1])) ? $func[1] : E_USER_NOTICE;
-                    trigger_error($this->getMessage(), $f);
-                    break;
-                case self::OBSERVER_DIE :
-                    $f = (isset($func[1])) ? $func[1] : '%s';
-                    die(printf($f, $this->getMessage()));
-                    break;
-                default:
-                    trigger_error('invalid observer type', E_USER_WARNING);
-            }
-        }
-    }
-
-    /**
-     * Return specific error information that can be used for more detailed
-     * error messages or translation.
-     *
-     * This method may be overridden in child exception classes in order
-     * to add functionality not present in PEAR_Exception and is a placeholder
-     * to define API
-     *
-     * The returned array must be an associative array of parameter => value like so:
-     * <pre>
-     * array('name' => $name, 'context' => array(...))
-     * </pre>
-     * @return array
-     */
-    public function getErrorData()
-    {
-        return array();
-    }
-
-    /**
-     * Returns the exception that caused this exception to be thrown
-     * @access public
-     * @return Exception|array The context of the exception
-     */
-    public function getCause()
-    {
-        return $this->cause;
-    }
-
-    /**
-     * Function must be public to call on caused exceptions
-     * @param array
-     */
-    public function getCauseMessage(&$causes)
-    {
-        $trace = $this->getTraceSafe();
-        $cause = array('class'   => get_class($this),
-                       'message' => $this->message,
-                       'file' => 'unknown',
-                       'line' => 'unknown');
-        if (isset($trace[0])) {
-            if (isset($trace[0]['file'])) {
-                $cause['file'] = $trace[0]['file'];
-                $cause['line'] = $trace[0]['line'];
-            }
-        }
-        $causes[] = $cause;
-        if ($this->cause instanceof PEAR_Exception) {
-            $this->cause->getCauseMessage($causes);
-        } elseif ($this->cause instanceof Exception) {
-            $causes[] = array('class'   => get_class($this->cause),
-                              'message' => $this->cause->getMessage(),
-                              'file' => $this->cause->getFile(),
-                              'line' => $this->cause->getLine());
-        } elseif (class_exists('PEAR_Error') && $this->cause instanceof PEAR_Error) {
-            $causes[] = array('class' => get_class($this->cause),
-                              'message' => $this->cause->getMessage(),
-                              'file' => 'unknown',
-                              'line' => 'unknown');
-        } elseif (is_array($this->cause)) {
-            foreach ($this->cause as $cause) {
-                if ($cause instanceof PEAR_Exception) {
-                    $cause->getCauseMessage($causes);
-                } elseif ($cause instanceof Exception) {
-                    $causes[] = array('class'   => get_class($cause),
-                                   'message' => $cause->getMessage(),
-                                   'file' => $cause->getFile(),
-                                   'line' => $cause->getLine());
-                } elseif (class_exists('PEAR_Error') && $cause instanceof PEAR_Error) {
-                    $causes[] = array('class' => get_class($cause),
-                                      'message' => $cause->getMessage(),
-                                      'file' => 'unknown',
-                                      'line' => 'unknown');
-                } elseif (is_array($cause) && isset($cause['message'])) {
-                    // PEAR_ErrorStack warning
-                    $causes[] = array(
-                        'class' => $cause['package'],
-                        'message' => $cause['message'],
-                        'file' => isset($cause['context']['file']) ?
-                                            $cause['context']['file'] :
-                                            'unknown',
-                        'line' => isset($cause['context']['line']) ?
-                                            $cause['context']['line'] :
-                                            'unknown',
-                    );
-                }
-            }
-        }
-    }
-
-    public function getTraceSafe()
-    {
-        if (!isset($this->_trace)) {
-            $this->_trace = $this->getTrace();
-            if (empty($this->_trace)) {
-                $backtrace = debug_backtrace();
-                $this->_trace = array($backtrace[count($backtrace)-1]);
-            }
-        }
-        return $this->_trace;
-    }
-
-    public function getErrorClass()
-    {
-        $trace = $this->getTraceSafe();
-        return $trace[0]['class'];
-    }
-
-    public function getErrorMethod()
-    {
-        $trace = $this->getTraceSafe();
-        return $trace[0]['function'];
-    }
-
-    public function __toString()
-    {
-        if (isset($_SERVER['REQUEST_URI'])) {
-            return $this->toHtml();
-        }
-        return $this->toText();
-    }
-
-    public function toHtml()
-    {
-        $trace = $this->getTraceSafe();
-        $causes = array();
-        $this->getCauseMessage($causes);
-        $html =  '<table style="border: 1px" cellspacing="0">' . "\n";
-        foreach ($causes as $i => $cause) {
-            $html .= '<tr><td colspan="3" style="background: #ff9999">'
-               . str_repeat('-', $i) . ' <b>' . $cause['class'] . '</b>: '
-               . htmlspecialchars($cause['message']) . ' in <b>' . $cause['file'] . '</b> '
-               . 'on line <b>' . $cause['line'] . '</b>'
-               . "</td></tr>\n";
-        }
-        $html .= '<tr><td colspan="3" style="background-color: #aaaaaa; text-align: center; font-weight: bold;">Exception trace</td></tr>' . "\n"
-               . '<tr><td style="text-align: center; background: #cccccc; width:20px; font-weight: bold;">#</td>'
-               . '<td style="text-align: center; background: #cccccc; font-weight: bold;">Function</td>'
-               . '<td style="text-align: center; background: #cccccc; font-weight: bold;">Location</td></tr>' . "\n";
-
-        foreach ($trace as $k => $v) {
-            $html .= '<tr><td style="text-align: center;">' . $k . '</td>'
-                   . '<td>';
-            if (!empty($v['class'])) {
-                $html .= $v['class'] . $v['type'];
-            }
-            $html .= $v['function'];
-            $args = array();
-            if (!empty($v['args'])) {
-                foreach ($v['args'] as $arg) {
-                    if (is_null($arg)) $args[] = 'null';
-                    elseif (is_array($arg)) $args[] = 'Array';
-                    elseif (is_object($arg)) $args[] = 'Object('.get_class($arg).')';
-                    elseif (is_bool($arg)) $args[] = $arg ? 'true' : 'false';
-                    elseif (is_int($arg) || is_double($arg)) $args[] = $arg;
-                    else {
-                        $arg = (string)$arg;
-                        $str = htmlspecialchars(substr($arg, 0, 16));
-                        if (strlen($arg) > 16) $str .= '&hellip;';
-                        $args[] = "'" . $str . "'";
-                    }
-                }
-            }
-            $html .= '(' . implode(', ',$args) . ')'
-                   . '</td>'
-                   . '<td>' . (isset($v['file']) ? $v['file'] : 'unknown')
-                   . ':' . (isset($v['line']) ? $v['line'] : 'unknown')
-                   . '</td></tr>' . "\n";
-        }
-        $html .= '<tr><td style="text-align: center;">' . ($k+1) . '</td>'
-               . '<td>{main}</td>'
-               . '<td>&nbsp;</td></tr>' . "\n"
-               . '</table>';
-        return $html;
-    }
-
-    public function toText()
-    {
-        $causes = array();
-        $this->getCauseMessage($causes);
-        $causeMsg = '';
-        foreach ($causes as $i => $cause) {
-            $causeMsg .= str_repeat(' ', $i) . $cause['class'] . ': '
-                   . $cause['message'] . ' in ' . $cause['file']
-                   . ' on line ' . $cause['line'] . "\n";
-        }
-        return $causeMsg . $this->getTraceAsString();
-    }
-}
\ No newline at end of file
diff --git a/libs/PEAR/FixPHP5PEARWarnings.php b/libs/PEAR/FixPHP5PEARWarnings.php
deleted file mode 100644
index 32807c2905..0000000000
--- a/libs/PEAR/FixPHP5PEARWarnings.php
+++ /dev/null
@@ -1,7 +0,0 @@
-<?php
-if ($skipmsg) {
-    $a = new $ec($code, $mode, $options, $userinfo);
-} else {
-    $a = new $ec($message, $code, $mode, $options, $userinfo);
-}
-?>
diff --git a/libs/PEAR/LICENSE b/libs/PEAR/LICENSE
deleted file mode 100644
index a00a2421fd..0000000000
--- a/libs/PEAR/LICENSE
+++ /dev/null
@@ -1,27 +0,0 @@
-Copyright (c) 1997-2009,
- Stig Bakken <ssb@php.net>,
- Gregory Beaver <cellog@php.net>,
- Helgi Þormar Þorbjörnsson <helgi@php.net>,
- Tomas V.V.Cox <cox@idecnet.com>,
- Martin Jansen <mj@php.net>.
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
-
-    * Redistributions of source code must retain the above copyright notice,
-      this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright
-      notice, this list of conditions and the following disclaimer in the
-      documentation and/or other materials provided with the distribution.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
-FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/libs/PEAR5.php b/libs/PEAR5.php
deleted file mode 100644
index 428606780b..0000000000
--- a/libs/PEAR5.php
+++ /dev/null
@@ -1,33 +0,0 @@
-<?php
-/**
- * This is only meant for PHP 5 to get rid of certain strict warning
- * that doesn't get hidden since it's in the shutdown function
- */
-class PEAR5
-{
-    /**
-    * If you have a class that's mostly/entirely static, and you need static
-    * properties, you can use this method to simulate them. Eg. in your method(s)
-    * do this: $myVar = &PEAR5::getStaticProperty('myclass', 'myVar');
-    * You MUST use a reference, or they will not persist!
-    *
-    * @access public
-    * @param  string $class  The calling classname, to prevent clashes
-    * @param  string $var    The variable to retrieve.
-    * @return mixed   A reference to the variable. If not set it will be
-    *                 auto initialised to NULL.
-    */
-    static function &getStaticProperty($class, $var)
-    {
-        static $properties;
-        if (!isset($properties[$class])) {
-            $properties[$class] = array();
-        }
-
-        if (!array_key_exists($var, $properties[$class])) {
-            $properties[$class][$var] = null;
-        }
-
-        return $properties[$class][$var];
-    }
-}
\ No newline at end of file
diff --git a/libs/README.md b/libs/README.md
index 333df17ceb..6488a45169 100644
--- a/libs/README.md
+++ b/libs/README.md
@@ -17,10 +17,6 @@ third-party libraries:
    - The bug #4206 (GD with JIS-mapped Japanese Font Support) was fixed in this
      commit: https://github.com/piwik/piwik/commit/516c13d9b13ca3b908575eb809f7ad9d9397f0e1
      Changed files: class/pImage.class.php class/pDraw.class.php
- * PEAR/, PEAR.php
-   - in r2419, add static keyword to isError and raiseError as it throws notices
-     in HTML_Quickform2
-   - in r2422, is_a() is deprecated for php 5.0 to 5.2.x
  * sparkline/
    - in r1296, remove require_once
    - empty sparklines with floats, off-by-one errors, and locale conflict