Merge tag 'upstream/1.5.1' into debian-experimental

ChangeLog

NEWS

RELEASE

configure

configure.ac

docs/plugins/gst-plugins-good-plugins.args

docs/plugins/gst-plugins-good-plugins.hierarchy

docs/plugins/html/GstIirEqualizer.html

docs/plugins/html/ch01.html

docs/plugins/html/ch02.html

docs/plugins/html/ch03.html

docs/plugins/html/gst-plugins-good-plugins-1.0.devhelp2

docs/plugins/html/gst-plugins-good-plugins-3gppmux.html

...ugins/html/gst-plugins-good-plugins-GstVideoMixerPad.html

docs/plugins/html/gst-plugins-good-plugins-aacparse.html

docs/plugins/html/gst-plugins-good-plugins-aasink.html

docs/plugins/html/gst-plugins-good-plugins-ac3parse.html

docs/plugins/html/gst-plugins-good-plugins-agingtv.html

docs/plugins/html/gst-plugins-good-plugins-alawdec.html

docs/plugins/html/gst-plugins-good-plugins-alawenc.html