Add calls to config_Put* to make sure that the configuration values survive a filter instance destruction.

Don't use stupid dirac patch.

New erase video filter (to remove logos). Example command line: ./vlc --video-filter "erase{mask=/home/dionoea/images/cone-small.png,x=50,y=50}" --no-audio --color -v -I rc ~/media/redefined-nintendo.mpg

vout_subpictures.c: enable scaling for RGBA subpictures.

Update the help strings. These should be autogenerated at run time (IMO)... else people won't notice commands added in other modules, like "adjust" for example.

Module specific commands change in rc.c. See http://article.gmane.org/gmane.comp.video.videolan.vlc.devel/28757 | sed 's/<at> /@/g'

vout_subpictures.c: Do not call the scaling module if the subpicture is using RGBA. The current way subpictures scaling and blending modules loading work is kind of flawed. It assumes that the module will be able to handle all the possible types of input chromas. This worked fine previously (since all modules allowing to scale/blend YUVP also handled YUVA), but doesn't now (the scaling module doesn't support RGBA. blending works fine).
vout_pictures.*: Add core support for RGBA pictures.