libc/eglibc: fix localedef 2.14 build

The localedef of eglibc 2.14 requires NOT_IN_libc to be defined in order to
compile intl/l10nflist.c.

This is because localedef is built separately from eglibc and uses some parts of
eglibc that don't compile in standalone without this preprocessor definition.

This fixes the following error:

[ALL ] gcc -g -O2 -DNO_SYSCONF -DNO_UNCOMPRESS
-DLOCALE_PATH='"/usr/lib/locale:/usr/share/i18n"'
-DLOCALEDIR='"/usr/lib/locale"' -DLOCALE_ALIAS_PATH='"/usr/share/locale"'
-DCHARMAP_PATH='"/usr/share/i18n/charmaps"'
-DREPERTOIREMAP_PATH='"/usr/share/i18n/repertoiremaps"'
-DLOCSRCDIR='"/usr/share/i18n/locales"' -Iglibc/locale/programs -Iglibc/locale
-I/<snip>/.build/src/eglibc-localedef-2_14/include
-I/<snip>/.build/src/eglibc-localedef-2_14 -I.
-include /<snip>/.build/src/eglibc-localedef-2_14/include/always.h -Wall
-Wno-format -c -o locarchive.o glibc/locale/programs/locarchive.c
[ALL ] glibc/locale/programs/locarchive.c: In function 'enlarge_archive':
[ALL ] glibc/locale/programs/locarchive.c:303:21: warning: variable
'oldlocrectab' set but not used [-Wunused-but-set-variable]
[ALL ] In file included from glibc/locale/programs/locarchive.c:651:0:
[ALL ] glibc/locale/programs/../../intl/l10nflist.c: In function
'_nl_normalize_codeset':
[ERROR] glibc/locale/programs/../../intl/l10nflist.c:342:9: error:
'_nl_C_locobj_ptr' undeclared (first use in this function)
[ALL ] glibc/locale/programs/../../intl/l10nflist.c:342:9: note: each
undeclared identifier is reported only once for each function it appears in
[ALL ] glibc/locale/programs/locarchive.c: In function
'add_locales_to_archive':
[ALL ] glibc/locale/programs/locarchive.c:1450:7: warning: passing argument
1 of '__xpg_basename' discards 'const' qualifier from pointer target type
[enabled by default]
[ALL ] /usr/include/libgen.h:35:14: note: expected 'char *' but argument is
of type 'const char *'
[ERROR] make[1]: *** [locarchive.o] Error 1

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
(transplanted from 4cd9134739b594451794cf61a6e1b137422cdafd)

 http://sources.redhat.com/ml/binutils/2004-04/msg00665.html

 fixes building on some architectures (like m68k/arm/cris/etc...) because

 it does the right thing

 diff -durN glibc-2.12.1.orig/include/libc-symbols.h glibc-2.12.1/include/libc-symbols.h

 --- glibc-2.12.1.orig/include/libc-symbols.h	2009-03-14 00:51:46.000000000 +0100

 +++ glibc-2.12.1/include/libc-symbols.h	2009-11-13 00:50:07.000000000 +0100

 @@ -239,12 +239,12 @@

  #  define __make_section_unallocated(section_string)

  # endif

 -/* Tacking on "\n\t#" to the section name makes gcc put it's bogus

 +/* Tacking on "\n#APP\n\t#" to the section name makes gcc put it's bogus

     section attributes on what looks like a comment to the assembler.  */

  # ifdef HAVE_SECTION_QUOTES

 -#  define __sec_comment "\"\n\t#\""

 +#  define __sec_comment "\"\n#APP\n\t#\""

  # else

 -#  define __sec_comment "\n\t#"

 +#  define __sec_comment "\n#APP\n\t#"

  # endif

  # define link_warning(symbol, msg) \

    __make_section_unallocated (".gnu.warning." #symbol) \