switch to submodules

Conflicts:
	soomla-native/compilations/android/Cocos2dxAndroidCore.jar
	soomla-native/compilations/ios/headers/ios-core
	soomla-native/compilations/ios/libCocos2dXiOSCore.a
	soomla-native/compilations/ios/libSoomlaiOSCore.a
update builds