* admin/merge-gnulib: Remove m4/locale-fr.m4.
* configure.ac (gt_LOCALE_FR_UTF8): Replace Gnulib’s
definition with a near no-op, as Emacs doesn’t care
about the Solaris 10 MB_CUR_MAX bug.
* lib/gnulib.mk.in: Regenerate.
* m4/locale-fr.m4: Remove; no longer needed due
to above changes.