misc notes on pidgin vv support

pidgin 2.6.2 is out today. Supposedly it fixed the problem when a video call is initiated but only a blank window appears. But you still need the following packages for video calling to actually work:

• to test gstreamer a/v devices, need gstreamer-properties in package gnome-extra/gnome-media
• for v4l(2) devices (that’s your camera) to work, also need media-plugins/gst-plugins-v4l(2)