Add "vbi-page" control in the rc interface (don't put any argument to retreive the current page number).

Conflicts:

	configure.ac			: ffmpeg headefile detection
	modules/codec/ffmpeg/chroma.c	: id madness
	modules/codec/ffmpeg/demux.c	: id madness
	modules/codec/ffmpeg/encoder.c	: id madness
	modules/codec/ffmpeg/ffmpeg.c	: id madness
	modules/codec/ffmpeg/postprocess.c : id madness
	modules/codec/ffmpeg/video.c	: id madness
	modules/codec/ffmpeg/video_filter.c : id madness
	modules/stream_out/switcher.c	: id madness
	modules/stream_out/transcode.c	: m2x branch uses id->ufilter iso id->vfilter
	src/playlist/view.c		: id madness
	src/stream_output/stream_output.c : id madness

This reverts commit c37341f1.
Wrong fix, do not trust Ubuntu users.

Fix [e6e22cae]

This reverts commit 55e7393c.
This need to be done in the GUIs

Really close #1227

This fixes #1578 for -bugfix. This breaks plugins from the source tree
(so we obviously need some more involved fix for master).

(cherry picked from commit 62a71b89)

Fix for [oCERT-2008-004] multiple speex implementations insufficient boundary checks. Patch by Eren Türkay
(cherry picked from commit 8060b345)