Bumped to the newest version of BDWGC which fixes the problem with crashes
when running on iOS 64-bit.
Merge branch 'master' of github.com:robovm/robovm
setOnClickListener added for UIBarButtonItem (#497).
Add methods of all extensions classes to their base classes (#490).
Merge branch 'master' of https://github.com/robovm/robovm
UIKit cleanups (#478).