gstreamer1: version bump 1.4.3 -> 1.4.4

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
gst-plugins-base1: version bump 1.4.3 -> 1.4.4

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
gst-plugins-good1: version bump 1.4.3 -> 1.4.4

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
gst-plugins-bad1: version bump 1.4.3 -> 1.4.4

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
gst-plugins-ugly1: version bump 1.4.3 -> 1.4.4

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
libxml2: update to 2.9.2

Also integrated two changes from upstream fixing two minor issues.
Build successfully tested against all ptxdist packages requiring
libxml2, no runtime tests.
libxml2: handle new ./configure options