[BUG] mcdeint custon filter always crashing

Revision: 37998
Author: al
Date: Sonntag, 22. Oktober 2017 19:53:38
Message:
Fix build after FFmpeg major bump

* prefix constants to use AV_ prefix where appropriate
* remove vismv stuff, it is no longer supported as lavc option
* mencoder,libmpcodecs: Disable vf mcdeint, ve lavc and ae lavc

After latest FFmpeg major bumps, vf mcdeint and ve lavc don't
compile anymore. Fixing them is not exactly trivial, that is
why I do not want to do this together with the trivial changes.

Because ae lavc depends on ve lavc I had to disable ae lavc too.

I guess ae lavc could be easily enabled again if the dependency
on ve lavc could be avoided.

Disabling ae lavc and more importantly ve lavc is a major drawback
for mencoder. I hope we can re-enable them soon.

TODO: I left updating the docs for later.