TestCpp for iOS uses libcocos2dx, libCocosDenshion, etc...

...as dependencies, and other minor fixes
some fixes

removes deprecated functions from AsssetManager
AssetManager: updated project
HelloCpp: does not depent on box2d, chipmunk, etc.
removes Xcode's autogenerated library paths
Merge pull request #2982 from ricardoquesada/ios_project_fixes

[iOS] TestCpp for iOS uses libcocos2dx, libCocosDenshion, etc...