* gdbserver/README: Update documentation.
        * gdbserver/configure.in: Update configury to match documentation.
        * gdbserver/Makefile.in: Likewise.
        * gdbserver/configure: Regenerated.
        * gdbserver/aclocal.m4: New file, generated by aclocal.
        * gdbserver/config.in: New file, generated by autoheader.