Merge remote-tracking branch 'origin/master' into 0.11

Merge remote-tracking branch 'origin/master' into 0.11

Conflicts:
	gst/gstbuffer.h
	gst/gstbufferlist.h
	gst/gstcaps.h
	gst/gstdatetime.h
	gst/gstelementfactory.h
	gst/gstevent.h
	gst/gstghostpad.h
	gst/gstindexfactory.h
	gst/gstiterator.h
	gst/gstmessage.h
	gst/gstminiobject.h
	gst/gstpipeline.h
	gst/gstquery.h
	gst/gstsegment.h
	gst/gststructure.h
	gst/gsttaglist.h
	gst/gsturi.h
	gst/gstvalue.h
	libs/gst/base/gstbitreader.h
	libs/gst/base/gstbytereader.h
	libs/gst/base/gstbytewriter.h

Note: can't use G_GNUC_MALLOC with GstCaps return
values in 0.11 because of the EMPTY+ANY singletons.