build: Fix the URLs for clutter-gst 1.4.x releases in the doap file
build: Release 1.6.0
build: Remove the upload to clutter-project.org

GNOME release only from now on.
build: Post release bump to 1.6.1
port to GStreamer 1.0

Contributions from: Alban Browaeys <prahal@yahoo.com>
gst: Use new g_mutex API
Misc doc fixes

gtk-doc/gi-scanner complains otherwise
clutter-gst: fix g-i scanning/compiling in an uninstalled GStreamer setup
Make clutter-gst for GStreamer 1.0 parallel installable

We need to be able to ship both the GStreamer 0.10 and the GStreamer
1.0 versions of clutter-gst, and have them not clash.

We used to install clutter-gst in a clutter-1.0 directory, but only
the GStreamer API version changed, not the clutter one, so we need to
move the includes to $(includedir)/clutter-gst-2.0/

https://bugzilla.gnome.org/show_bug.cgi?id=674077
build: find Gst-1.0.gir file properly again

We were looking for a "gstreamer-2.0" pkg-config
module now.

Fixes build against uninstalled GStreamer 1.0 and
GStreamer 1.0 in a different prefix.
Don't use GLint needlessly
Enable navigation in standalone plugin
build: Release 1.9.90
doc: Fix a couple of typos in the NEWS file
Update for GST_MESSAGE_DURATION -> DURATION_CHANGED rename
autosink: proxy ts-offset property of child sinks

The playbin2 av-offset property requires be able to configure the
ts-offset property on the video sink.
As we select the proper sink instance on the fly we must take care of
that property.
video-sink* examples: Port to gstreamer 1.0.
gst-indent code
video-sink: Don't use GL* values

And only check for target type if using full GL
video-sink: Detect errors, propagate them, add debug

If an issue happened in the main context (due to negotiation failures
for example), the issue was never detected nor was it propagated
upstream. This fixes it

Also detect more failures and add debug to know what is going on