Add a RenderState member for cull face side.

Add a new RenderState variable named 'cullFaceSide' for changing between
FRONT, BACK and FRONT_AND_BACK values.

This is useful in same materials, such as when implementing cel shading.
Merge pull request #1004 from dgough/next

Fixed the character sample for Android
Added some missing stuff for the lua bindings.
Added missing include for lua bindings.
Merge pull request #1003 from rgngl/next

Add a RenderState member for cull face side.
Fixes multi-touch behaviour of UI forms and virtual gamepads.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Fixes using sliders with a keyboard on MacOS.
Merge branch 'next' of https://github.com/ablake/GamePlay into next
Merge pull request #1006 from ablake/next

UI Bugfixes
Fixed the visual studio project and filter.