Restore the Objective C version of the music list.
Swift doesn't support KVO/KVC yet, and it was causing problems.
Make PlayerPRO 6 build again.
Migrate PPCurrentlyPlayingIndex to Swift.
Make PPMusicListDragClass conform to the NSSecureCoding protocol.
Add a newline at the end of the attributes file.
Enforce line feed end-of-line thingy.
Remove dangling MSVC projects.
Merge branch 'master' into Xcode6