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)

 diff -durN gcc-4.4.0.orig/gcc/doc/invoke.texi gcc-4.4.0/gcc/doc/invoke.texi

 --- gcc-4.4.0.orig/gcc/doc/invoke.texi	2009-05-27 21:38:11.000000000 +0200

 +++ gcc-4.4.0/gcc/doc/invoke.texi	2009-05-27 21:38:11.000000000 +0200

 @@ -5411,6 +5411,11 @@

  Please note the warning under @option{-fgcse} about

  invoking @option{-O2} on programs that use computed gotos.

 +NOTE: In Gentoo, @option{-D_FORTIFY_SOURCE=2} is set by default, and is

 +activated when @option{-O} is set to 2 or higher.  This enables additional

 +compile-time and run-time checks for several libc functions.  To disable,

 +specify either @option{-U_FORTIFY_SOURCE} or @option{-D_FORTIFY_SOURCE=0}.

 +

  @item -O3

  @opindex O3

  Optimize yet more.  @option{-O3} turns on all optimizations specified

 diff -durN gcc-4.4.0.orig/gcc/gcc.c gcc-4.4.0/gcc/gcc.c

 --- gcc-4.4.0.orig/gcc/gcc.c	2009-03-17 22:25:59.000000000 +0100

 +++ gcc-4.4.0/gcc/gcc.c	2009-05-27 21:38:11.000000000 +0200

 @@ -807,6 +807,7 @@

   %{H} %C %{D*&U*&A*} %{i*} %Z %i\

   %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\

   %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\

 + %{!D_FORTIFY_SOURCE:%{!D_FORTIFY_SOURCE=*:%{!U_FORTIFY_SOURCE:-D_FORTIFY_SOURCE=2}}}\

   %{E|M|MM:%W{o*}}";

  /* This contains cpp options which are common with cc1_options and are passed