Original commit message from CVS:
* ext/dts/gstdtsdec.c: (gst_dtsdec_init), (gst_dtsdec_channels),
(gst_dtsdec_handle_event), (gst_dtsdec_handle_frame),
(gst_dtsdec_chain), (gst_dtsdec_change_state):
* ext/dts/gstdtsdec.h:
Don't clobber the stack constructing the channels array.
Make the element chain-based. DTS tracks can now be played.