Update Xcode project file to use gcc 4.2 instead of 4.0 and set optimization level to -O2 for libopenspotify
Update Xcode project file to use gcc 4.2 instead of 4.0 and set optimization level to -O2 for libopenspotify

noahwilliamsson/openspotify,noahwilliamsson/openspotify