ext/mpeg2dec/gstmpeg2dec.*: Use fractional framerates
Original commit message from CVS: * ext/mpeg2dec/gstmpeg2dec.c: (src_templ), (gst_mpeg2dec_negotiate_format), (handle_sequence), (gst_mpeg2dec_sink_event): * ext/mpeg2dec/gstmpeg2dec.h: Use fractional framerates