Merge pull request #4501 from sagiben/Gotham

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Update XCode project for MP3Codec/libmad removal
Update MSVC project for MP3Codec/libmad removal
Update depends for MP3Codec/libmad removal
paplayer: Remove MP3Codec
dvdplayer: remove MP3Codec
Remove libmad
Update android packaging Makefile for MP3Codec/libmad removal
Cleanup .gitignore for MP3Codec/libmad removal
(squash into "Remove libmad") Remove libmad traces from DllPath headers
(squash into "Remove libmad") Cleanup configure.in