When it is set to "true", the window is automatically resized
  when the vout size changes.

Todo:
	Fix FLAC
	SDL patch by Meuh

* modules/codec/libmpeg2.c: when AR is forced by input, assume it is based on width/height, not display_width/height (required for broken DVDs).

aspect ratio (e.g. 1280x800, 1920x1200)

anything else than zoom=1.0 in Preferences.
Reworked it to always go through InitWindowsize() 

* sub elements can be moved up (positive values) and down (negative)
* force_crop'ed elements cannot be moves (usually only dvd menu's)
* works for spudec and subsdec
* if the margin / offset correction forces the picture out of the main picture, the offset is cropped so that the subpicture is still 100% visible.

* if we are certain we have a visualization module, don't try to open it as an audio-filter first. (fixes #416)

* macosx.m: renamed "Stretch Aspect ratio" to "Stretch video to fill window" to make the option's meaning a bit more clear (thanks to Jonas for the hint)

* modules/codec/ffmpeg/ffmpeg.c: added QT RLE fourcc.
--This line, and 
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M    codec/ffmpeg/ffmpeg.c
M    demux/mp4/mp4.c