Trait collection patch for iOS7 and Swift

iOS7_Patches

// put these functions in an objc class, then you can call them from Swift without the link errors
// you'll need an owningViewController ivar passed in during init

-(id)init:(UIViewController*) viewController {
    if ((self = [super init])) {
        owningViewController = viewController;
    }
    return self;
}
-(UIUserInterfaceSizeClass)verticalSizeClass {
    if ([owningViewController.view respondsToSelector:@selector(traitCollection)]) {
        return owningViewController.view.traitCollection.verticalSizeClass;
    } else {
        if (([FC_Settings sharedFC_Settings].deviceType == iPad) || ([FC_Settings sharedFC_Settings].deviceType == iPadRetina))
            return UIUserInterfaceSizeClassRegular;
        else {
            if (owningViewController.interfaceOrientation == UIDeviceOrientationPortrait) {
                return UIUserInterfaceSizeClassRegular;
            } else {
                return UIUserInterfaceSizeClassCompact;
            }
        }
    }
}
-(UIUserInterfaceSizeClass)horizontalSizeClass {
    if ([owningViewController.view respondsToSelector:@selector(traitCollection)]) {
        return owningViewController.view.traitCollection.horizontalSizeClass;
    } else {
        if (([FC_Settings sharedFC_Settings].deviceType == iPad) || ([FC_Settings sharedFC_Settings].deviceType == iPadRetina))
            return UIUserInterfaceSizeClassRegular;
        else return UIUserInterfaceSizeClassCompact;
    }
}