Some error checking when trying to load a music list.
Revert PPInstrumentWindowController back to Objective C.
Fixing the iOS version.
Updating the example projects' Xcode project files.
Incorporate changes from the Xcode 6 branch into master.
Merge remote-tracking branch 'github/master'

Conflicts:
	PlayerPRO Player/PPMusicList.m
Merge branch 'master' into Xcode6

Conflicts:
	PPMacho.xcodeproj/project.pbxproj
	PlayerPRO Player/AppDelegate.h
	PlayerPRO Player/PPMusicList.h
	PlayerPRO Player/PPMusicList.m
	PlayerPRO Player/PPMusicListDragClass.h
	PlayerPRO Player/PPMusicListDragClass.m
	StcfImporter/PPSTImporter.m
	iOS PlayerPRO Player/PPiAppDelegate.m