- Fix to Terrain::getVisibleTriangleCount.
- Fix to script camera in gameplay-tests.
- Other minor tweaks to Terrain test.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge branch 'next' of https://github.com/blackberry/GamePlay into next

Conflicts:
	gameplay-tests/src/TerrainTest.cpp
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #735 from sgrenier/next

Terrain test updates