* cccp.c (main): Only call setlocale (LC_MESSAGES, ...) if LC_MESSAGES
        is defined.
        * collect2.c (main): Likewise.
        * cppmain.c (main): Likewise.
        * gcc.c (main): Likewise.
        * gcov.c (main): Likewise.
        * protoize.c (main): Likewise.
        * toplev.c (main): Likewise.

From-SVN: r24923