* This should fix switching from a stereo device to surround40 or surround51 with the alsa audio output (close #85).
* Now we probe the device for supported formats on each device change
* Please test this, at least on stereo inputs. We don't want a broken alsa audio output in 0.8.4...

their version number up, but at least it doesn't break builds with older
versions of ffmpeg)

* let's run 'make clean-src' when typing 'make clean', since make clean-bin won't be used anyway. The user is informed of this through a message.

* Renamed "Advanced" subcat of "Input / Codecs" into "General" and made all the advanced options within it hidden.

vlccontrol.cpp: fixed a bug when processing target options stored in a safe array, last element in array was never processed

  This is really dirty btw. the OS X GUI module has some serious memory management issues.

(it was not padding properly the end of encoded stream)

* wizard.*: added the display-option to the advanced-transcoding and the advanced-streaming options (-> it's displayed only once, since only one of these pages is displayed at a one run)
* THANKS: added zcot's patch ;)

  "Session Announcement Protocol"

* Thanks to Meuuh for the feedback. threads prioritization should work now, without annoying error messages.
* If an rt-offset is specified, then this offset is not applied to the main thread, because it's value cannot yet be retrieved at that time (same as before, but now without annoying error).