Move duplicated documentation rules to Makefile.shared

- Also, harmonize libm to use CHEWOUT_FILES like libc, rather than chobj.
  Update documentation appropriately.

        * HOWTO: Update.
        * Makefile.shared: Move documentation rules to here...
        * libc/argz/Makefile.am: ... from here ...
        * libc/ctype/Makefile.am: ... and here.
        * libc/errno/Makefile.am: Ditto.
        * libc/iconv/Makefile.am: Ditto.
        * libc/iconv/ccs/Makefile.am : Ditto.
        * libc/iconv/ces/Makefile.am: Ditto.
        * libc/iconv/lib/Makefile.am: Ditto.
        * libc/locale/Makefile.am: Ditto.
        * libc/misc/Makefile.am: Ditto.
        * libc/posix/Makefile.am: Ditto.
        * libc/reent/Makefile.am: Ditto.
        * libc/search/Makefile.am: Ditto.
        * libc/stdio/Makefile.am: Ditto.
        * libc/stdio64/Makefile.am: Ditto.
        * libc/stdlib/Makefile.am : Ditto.
        * libc/string/Makefile.am: Ditto.
        * libc/syscalls/Makefile.am: Ditto.
        * libc/time/Makefile.am : Ditto.
        * libc/unix/Makefile.am: Ditto.
        * libc/xdr/Makefile.am: Ditto.
        * libm/common/Makefile.am: Ditto.
        * libm/complex/Makefile.am: Ditto.
        * libm/math/Makefile.am: Ditto.
        * libm/mathfp/Makefile.am: Ditto.

1 files changed, 1 insertions, 13 deletions

diff --git a/newlib/libc/iconv/lib/Makefile.am b/newlib/libc/iconv/lib/Makefile.am
index d8fd52838..dd6c34054 100644
--- a/newlib/libc/iconv/lib/Makefile.am
+++ b/newlib/libc/iconv/lib/Makefile.am
@@ -34,16 +34,4 @@ noinst_DATA =
 include $(srcdir)/../../../Makefile.shared
 
 CHEWOUT_FILES = iconv.def
-
-SUFFIXES = .def
-
-CHEW = ../../../doc/makedoc -f $(srcdir)/../../../doc/doc.str
-
-.c.def:
-	$(CHEW) < $< > $*.def 2> $*.ref
-	touch stmp-def
-
-doc: $(CHEWOUT_FILES)
-
-CLEANFILES = $(CHEWOUT_FILES) *.ref
-
+CHAPTER =