Merge pull request #1423 from dgough/next

Fixed doxygen error in comment.
Overall native build for Android, provided for convenience.
Add comments and fail for unsupported OS.
Merge pull request #1426 from kwhatmough/next

Overall Ant script in attempt to make Android native build step a bit more convenient
Fixed issue with multi-touch on virtual gamepad and UI.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1428 from sgrenier/next

Fixed issue with multi-touch on virtual gamepad and UI
Fix for DebugMem config on Windows
Minor changes to android build.xml.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Removed remaining references to FORCE_CLEAN_SHUTDOWN
Merge pull request #1429 from zejji/next

Fix for DebugMem config on Windows
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Changed the Android delete key to be backspace