* gdbtk.c (gdbtk_init): Include the command "warp_pointer"

    * gdbtk.c (gdbtk_init): Include the command "warp_pointer"
        for all platforms. Used for testing ONLY.

        * util.tcl (gdbtk_read_defs): If there is an error reading
        the testsuite definition file, print the error message to
        stderr, not stdout. This will allow tcl to know that an error
        has occurred.
        (find_iwidgets_library): Make it work for running testsuites
        from installed directory.

        * main.tcl: If we failed to find iwidgets, check if the
        testsuite is running. If it is running, do not pop up
        a dialog box: just print out the error and exit.
        Initialize _test(verbose) for the testsuite.