winsup/cygwin/release/1.7.21


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What's new:
-----------

- New API: rawmemchr.

Bug fixes:
----------

- Fix long-standing problem which allows to access files via ".." using an
  invalid POSIX path, for instance, `cd nonexistant/../existing_dir".
  Fixes: http://cygwin.com/ml/cygwin/2013-05/msg00222.html

- Fix EFAULT when reading large clipboard.
  Fixes: http://cygwin.com/ml/cygwin/2013-06/msg00311.html

- Fix creation of relative native symlinks.
  Fixes: http://cygwin.com/ml/cygwin/2013-06/msg00340.html

- Update profiling code to latest from Mingw-w64.  Allows profiling on x86_64
  now and fixes http://cygwin.com/ml/cygwin/2013-06/msg00376.html

- Fix character comparisons in certain scenarios within the functions glob(3),
  fnmatch(3), and regcomp(3).  All Unicode chars beyond U+0100 are affected.

- Fix problem with pty closing which manifested as a screen issue:
  Fixes: http://cygwin.com/ml/cygwin/2013-06/msg00196.html