gst/gst.override: ignore gst_plugin_get_module, GModule aren't wrapped in pygtk anyway.

gst/gst.override: ignore gst_plugin_get_module, GModule aren't wrapped in pygtk anyway.

Original commit message from CVS:
* gst/gst.override:
ignore gst_plugin_get_module, GModule aren't wrapped in
pygtk anyway.
wrap gst_clock_get_calibration
* gst/gstbus.override:
Ignore the following:
gst_bus_create_watch, since GSource aren't wrapped in pygtk
gst_bus_sync_signal_handler and gst_bus_async_signal_func since
these functions are used by the default bus handler anyway.
* gst/gstevent.override:
wrapped gst_event_parse_buffer_size
* gst/libs.defs:
Replace all guint8* for gst_dp_ functions by gchar * since they
are the same, but at least get generated properly by the code
generator.