Added Terrain test to gameplay-tests app (still a couple features to add to it).
Couple minor fixes to Terrain.
Updated gameplay-encoder to support object-space normal map generation from RAW8 and RAW16 files.
Added script camera to gameplay-tests.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #711 from sgrenier/next

Added Terrain test to gameplay-tests