Add a hack to mostly deal with problems in support of -pthread and

Add a hack to mostly deal with problems in support of -pthread and

Mon Dec 16 14:58:33 2002  Owen Taylor  <otaylor@redhat.com>

        * configure.in: Add a hack to mostly deal with
        problems in support of -pthread and -lpthread;
        pass -lpthread (for linux) or -Wc,-pthread (for
        other platforms) to libtool when linking libgthread.
        (#100697)