[GOLD] debug_msg test

[Cary Coutant]

> gold/
>     * configure.ac: Export DEFAULT_TARGET.
>     * configure: Regenerate.
>     * Makefile.in: Regenerate.
>     * testsuite/Makefile.am: Add .EXPORT_ALL_VARIABLES.
>     * testsuite/Makefile.in: Regenerate.
>     * testsuite/debug_msg.sh: Delete duplicate tests.
>     Don't check undef_int error message match for powerpc where the
>     source file and line number aren't available.

I have committed this patch. Sorry for the delay.

-cary