Remove gdx-ai from core repo
fixed PolygonRegionLoader GWT compatibility and error report

removed call to Class#getSimpleName() for GWT compatibility
throws GdxRuntimeException instead of logging to Gdx.app.error(..)
Added stencil buffer to FrameBuffer.
Added matching constructor to existing code.
Add Usage#ColorUnpacked, deprecate Usage#Color.
Merge branch 'master' of github.com:libgdx/libgdx
Added a test for stenciled framebuffer.
Removed unneccesary changes.
Removed unneccesary matrix and added a comment what should be seen.
Use UTF-8 for Hiero settings

Closes #2308
Merge pull request #2328 from dermetfan/master

fixed PolygonRegionLoader GWT compatibility and error report
Merge pull request #2357 from just4phil/iap

Looking good :-D  

I'll merge it but I'll make some changes:
1) setDeveloperID() and setApplicationKey() should got into config.addStoreKey(...). I'll need to make this little bit nicer though. Maybe by passing in an object or so.
2) I'll make this a separate project, e.g. gdx-pay-android-ouya. 

Thanks for putting this together. Really appreciated :-D
Merge branch 'master' of https://github.com/libgdx/libgdx into iap
- GdxPay: OUYA IAP system moved to separate project and integrated into libGDX build-system :)
GdxPay: bugfix (refactoring wasn't quite done yet...).
Merge pull request #2338 from ollipekka/master

FrameBuffer to include stencil attachment
Merge pull request #2336 from xoppa/various

Add Usage.ColorUnpacked, deprecate Usage.Color.
Merge pull request #2312 from Tom-Ski/master

Remove gdx-ai from core repo
GdxPay: detecting the installed IAP-systems for Android via Java Reflection.
Merge branch 'master' of https://github.com/libgdx/libgdx into iap

Conflicts:
	build.xml
	pom.xml