mp: extend syntax, make it accept mp=filter=params
Make the mp wrapper accept the syntax mp=filter=params as alternativeto mp=filter:params. The alternative syntax is sligthly more readableand should simplify copy&paste of MPlayer filter strings to the mp...
Merge libavcore into libavutil
Done to keep ABI compatible. Otherwise this is just silly
Warn about vf_mp
Add libmpcodecs wrapper for libavfilter, still disabled