* configure.ac: Reflect s/gl_MACROS/coreutils_MACROS/ renaming.
Call gl_INIT directly, rather than through the above.
[m4/ChangeLog]
* jm-macros.m4 (coreutils_MACROS): Rename from gl_MACROS, now that
most of the gnulib macros have migrated into gnulib.
Don't call gl_INIT here (now it's called from configure.ac, directly).