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)

 #!/bin/sh

 # (C) 2008 Yann E. MORIN <yann.morin.1998@anciens.enib.fr>

 # Licensed under the GPL v.2

 LIBDUMA_SO=

 case "$1" in

   -on)

     case "${LD_PRELOAD}" in

       *${LIBDUMA_SO}*) ;;

       *) LD_PRELOAD="${LIBDUMA_SO} ${LD_PRELOAD}";;

     esac

     shift

     ;;

   -off)

     # We use a suposedly POSIX-compliant shell: /bin/sh

     #  -> we can't use "${LD_PRELOAD//${LIBDUMA_SO}/}", it's not POSIX

     # We don't know if sed will be present on the target

     #  -> we can't use $(echo "${LD_PRELOAD}" |sed -r -e "s|${LIBDUMA_SO}||;")

     # So, iterate through LD_PRELOAD, and keep only those libs that

     # are not "${LIBDUMA_SO}"

     old_LD_PRELOAD="${LD_PRELOAD}"

     LD_PRELOAD=

     for lib in ${old_LD_PRELOAD}; do

       [ "${lib}" = "${LIBDUMA_SO}" ] || LD_PRELOAD="${LD_PRELOAD} ${lib}"

     done

     unset old_LD_PRELOAD

     shift

     ;;

   -show)

     case "${LD_PRELOAD}" in

       *${LIBDUMA_SO}*) echo "duma is enabled";;

       *)               echo "duma is disabled";;

     esac

     exit 0

     ;;

   "")

     cat <<_EOF_

 Usage:

     . $0 <-on|-off|-show>

         Sets, unsets or show DUMA usage.

     $0 <executable [arg...]>

         Execute 'executable' (with arguments 'args') using DUMA.

 _EOF_

     false # Don't 'exit', we could well be source'd

     ;;

   *)

     exec "$0" -on "$@"

     ;;

 esac

 export LD_PRELOAD

 if [ -n "$1" ]; then

   exec "$@"

 fi