gst/spectrum/gstspectrum.c: Implements stop() to clear the adapter and event() to clear the adapter on FLUSH_STOP and...

Original commit message from CVS:
* gst/spectrum/gstspectrum.c: (gst_spectrum_class_init),
(gst_spectrum_start), (gst_spectrum_stop), (gst_spectrum_event):
Implements stop() to clear the adapter and event() to clear the
adapter on FLUSH_STOP and EOS.