We can't use G_DEFINE_*TYPE here because we need the klass in the _init
method to get to the padtemplates. Fixes 'GstTagDemux subclass GstTagDemux
did not set up a {sink,src} pad template' warnings.

videoconvert does not work with GRAY formats yet so don't try to run the unit
test with it.

Conflicts:
	ext/vorbis/gstvorbisparse.c
	gst-libs/gst/video/video.c
	gst/videoscale/gstvideoscale.c
	sys/v4l/gstv4lxoverlay.c
	sys/v4l/v4l_calls.c
	sys/v4l/v4lsrc_calls.c
	tests/check/libs/video.c

Only return LIKELY probability if we've seen an SPS, PPS and an
IDR slice nal, i.e. try harder to avoid false positives such
as with certain VC-1 files.

https://bugzilla.gnome.org/show_bug.cgi?id=668565

Fix merge error from commit fb6d0905

Don't write < 1 when we mean == 0.

Push the stored events in the right direction

Tell code about new location of translation dict.

First call the vmethod and then configure the audioinfo in the baseclass. This
allows subclasses to know about the old format.

If the subclass doesn't implement a transform_frame function we need to force
the baseclass into in_place transform.

This prevents file conflicts with GStreamer 0.10.

https://bugzilla.gnome.org/show_bug.cgi?id=669328

Set TH_ENCCTL_SET_DUPLICATE_FLAG when we see a gap flag, to
indicate to the encoder that the current frame is a duplicate
of the previous frame.

Try to send the streamheader after the first buffer.