fixed potential(?) bug where temporary lua variables were left on the stack after calls to lua_len
Merge pull request #1106 from reven86/next-clean

Bugfixes
Update README.md
Merge pull request #1105 from bpbromberg/next

Fixed missing lua_pops after calls to lua_len
Update README.md
PlatformAndroid: Map back button to Esc key in android.
Fixed sample builds for Android

Default target for Android builds is armeabi-v7a for a while, updated
the samples to build with that.
Merge pull request #1111 from rgngl/androidBackButton

PlatformAndroid: Map back button to Esc key in android.
Merge pull request #1112 from rgngl/samplesAndroidFix

Fixed sample builds for Android
- Fixed an error in Matrix::createOrthographicOffCenter.
- Changed orthographic camera mode to have an origin of bottom left, with +Y up and +X to the right.
- Added configurable character spacing to the Font class.
- Changed Scene:addNode and Node:addChild to add nodes to the back of the list instead of the front, so that traversal order matches the order in which nodes are added.
- Added support for creating hierarchy (child nodes) in a .scene file.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next

Conflicts:
	gameplay/src/TextBox.cpp
Merge pull request #1119 from sgrenier/next

Misc changes and fixes
Updated some of the form Control classes so that they get marked as dirty when modified.
Merge pull request #1120 from dgough/next

Updated some of the form Control classes so that they get marked as dirty when modified
Added support for specifying front facing polygon mode (CW or CCW) in RenderState.
Fixed issue with parsing tags in .scene file for nested nodes.
Added ETC1 compressed texture support.
Added support for dynamic meshes rigid bodies via btConvexHull, which is a more efficient approximation of a convex mesh. More accurate higher resolution static triangle meshes are still supported via btBvhTriangleMeshShape when a mass of zero is specified.

Updated the physics sample in the sample browser to use a dynamic mesh rigid body for the duck model.
Merge branch 'next' of https://github.com/sgrenier/GamePlay into next
Merge pull request #1127 from sgrenier/next

Minor fixes and features