- Adds initial support for Social API with Scoreloop impl for BlackBerry.
- Cleans up some PREPROCESSOR macros for consistency.
- Fixes a few warnings.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next

Conflicts:
	gameplay/src/PhysicsController.cpp
Fixes compile error on Linux introduced by previous commit.
Fixes crash in Font when minimizing windows, introduced by previous commit.

Fixed #1153
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1154 from sgrenier/next

Fixes issues introduced by previous commit
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Particle editor/sample improvements.
Will likely be moving this out of samples and into tools in the near future.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1155 from sgrenier/next

Particle sample/editor enhancements
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Updated to add the initial social abstraction. dducharme will be adding Google Play Game Services and GameCenter also later.
Update README.md
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1157 from seanpaultaylor/next

Next