Update project settings for Xcode 5 and iOS 7

Add a default launch image for iPhone 5
Adopt recommended Xcode 5 build settings
Cast OSStatus to long for printf format specifier

OSStatus is a typedef to a 32-bit int on 23-bit platforms
and a 64-but long on 64-bit platforms.
Missing call to super in viewDidLoad
Merge branch 'ios7'