Disabled maintainer mode.

    * Makefile.in: Regenerated
    * aclocal.m4: Regenerated
    * configure: Regenerated
    * configure.ac: Disabled maintainer mode. When doing a fresh git
        clone, the autotools thinks that configure is older than
        configure.ac, so attempts to recreate it.
    * doc/Makefile.in: Regenerated
    * gcc_plugin/Makefile.in: Regenerated
    * include/Makefile.in: Regenerated
    * mageec/Makefile.in: Regenerated
    * ml/C5/Makefile.in: Regenerated
    * ml/Makefile.in: Regenerated
    * testsuite/Makefile.in: Regenerated
    * testsuite/gcc_plugin.tests/Makefile.in: Regenerated
    * testsuite/mageec.tests/Makefile.in: Regenerated
    * testsuite/python.tests/Makefile.in: Regenerated