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)

 # Makefile for the scripts/ sub-directory

 # Here, we can update the config.* scripts.

 # If we're in CT_LIB_DIR, then CT_LIB_DIR == CT_TOP_DIR, and we can update those

 # scripts for later inclusion mainline. If CT_LIB_DIR != CT_TOP_DIR, then those

 # scripts are downloaded only for use in CT_TOP_DIR.

 # ----------------------------------------------------------

 # The tools help entry

 help-distrib::

 	@echo  '  updatetools        - Update the config tools'

 # ----------------------------------------------------------

 # Where to get tools from, and where to store them into

 # The tools are: config.guess and config.sub

 CONFIG_SUB_SRC="http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD"

 CONFIG_SUB_DEST=scripts/config.sub

 CONFIG_GUESS_SRC="http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD"

 CONFIG_GUESS_DEST=scripts/config.guess

 PHONY += updatetools

 updatetools: $(CONFIG_SUB_DEST) $(CONFIG_GUESS_DEST)

 # ----------------------------------------------------------

 # How to retrieve the tools

 wget_opt=-o /dev/null

 ifeq ($(strip $(V)),2)

   wget_opt=

 endif

 PHONY += scripts

 scripts:

 	@$(ECHO) '  MKDIR $@'

 	$(SILENT)mkdir -p $@

 $(CONFIG_SUB_DEST): scripts FORCE

 	@$(ECHO) '  WGET  $@'

 	$(SILENT)wget $(wget_opt) -O $@ $(CONFIG_SUB_SRC)

 	$(SILENT)chmod u+rwx,go+rx-w $@

 $(CONFIG_GUESS_DEST): scripts FORCE

 	@$(ECHO) '  WGET  $@'

 	$(SILENT)wget $(wget_opt) -O $@ $(CONFIG_GUESS_SRC)

 	$(SILENT)chmod u+rwx,go+rx-w $@

 # ----------------------------------------------------------

 # Clean up the mess

 distclean::

 	@$(ECHO) "  CLEAN scripts"

 	$(SILENT)[ $(CT_TOP_DIR) = $(CT_LIB_DIR) ] || rm -rf $(CT_TOP_DIR)/scripts