main/gstreamer1: upgrade to 1.4.2
main/gst-plugins-base1: upgrade to 1.4.2
main/gst-libav1: upgrade to 1.4.2
main/gst-plugins-bad1: upgrade to 1.4.2
main/gst-plugins-good1: upgrade to 1.4.2
main/gst-plugins-ugly1: upgrade to 1.4.2