iOS fixes for jMonkeyEngine 3.2

• Create a new jMonkeyEngine project on your Mac.
• Enable iOS in project properties.
• Then unzip jME-3.2-ios-updates.zip in your project folder. (This will overwrite existing files)

It contains these pull requests:

ios-touch-fix
ios-xcode-fix
ios-openal-fix
ios-proguard-exclusions
ios-fix-nifty-gui