[patches] Merge branches/eglibc-2_5/{libc,localedef} locale option group to trunk

[Jim Blandy <jimb@xxxxxxxxxxxxxxxx>]

I've merged the following changes from libc and localedef on the
EGLIBC 2.5 branch to the trunk:

libc/ChangeLog.eglibc:
2006-12-26  Jim Blandy  <jimb@xxxxxxxxxxxxxxxx>

       * option-groups.def, option-groups.defaults (OPTION_EGLIBC_LOCALES):
       New option group.
       * localedata/Makefile: Trim locale lists if
       OPTION_EGLIBC_LOCALES is not enabled.

       * option-groups.mak: Allow includer to override the option
       group config file name.

localedef/ChangeLog.eglibc:
2006-12-26  Jim Blandy  <jimb@xxxxxxxxxxxxxxxx>

       * Makefile.in: Include option-groups.mak from glibc.  Trim
       locale list if OPTION_EGLIBC_LOCALES is not enabled.