* src/misc/configuration.c, include/configuration.h, src/audio_output/intf.c, include/audio_output.h, modules/gui/gtk/display.[ch]: configuration variables now use vlc_callback_t callbacks (same as the object variables).
* modules/video_output/x11/*: support for the _NET_WM_STATE_FULLSCREEN hint from the Extended Window Manager Hints spec.
* modules/audio_output/alsa.c: support for 4.0 and 5.1 audio channels. This time it has been tested ;)