Video playback optional
Make the video playback stuff optional just like the video record thing is.
- Add
CONFIG_VIDEO_PLAYBACK
, defaults toenabled
AFAIK only "Blood Omnicide" and one more other game make use of dpv video playback, the code and libs are old and rotten (not touched for 8+ years), there should be an option to just disable this if not required.
Please review if my "noop" changes on the prvm commands are sane and work and check the FIXME
's if the header includes are required at all in those files.