#125776# adapt STL include path for Xcode 6
#i125776# handle OSX SDK 10.9 changes regarding NSPrintingOrientation -> NSPaperOrientation

SDK 10.9 changed the NSPrintInfo::orientation method to take a parameter of type
NSPaperOrientation (i.e. enum) instead of NSPrintingOrientation (i.e. NSUInteger).
The actual values are the same so the binaries work fine on older and newer platforms,
but the type mismatch on the newer SDK would break the build.