I was certain that I had the debugging of the metadata plug-in set up correctly…
Change OSErrs in PlayerPROKit to MADErr.
Make all of the import/export plug-ins multiple-instance safe.
Merge branch 'master' into Xcode6

Conflicts:
	PPMacho.xcodeproj/xcshareddata/xcschemes/PPImport-app.xcscheme
	PPMacho.xcodeproj/xcshareddata/xcschemes/PPImport-release.xcscheme
	PlayerPROKit/PPDriver.h
	PlayerPROKit/PPDriver.m
	Shared/PPErrors.h