- 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
Added support for specifying additional global shader defines via a graphics/shaderDefines property in game.config.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1147 from sgrenier/next

Next-sgrenier
Fixed issue with font stretching when drawing onto a frame buffer that is a different size than the original window size.
Misc fixes to UI.
Fixed an issue with particle emitters where they would update incorrectly with very high frame rates.
Exposed some missing properties from ParticleEmitter.
Implemented ParticleEmitter cloning.
Modified particles sample to support loading and saving of particle files on Windows.
Non-Windows platforms now simply display a single particle effect (fire).
Future updates will enable editing (loading/saving) on Mac/Linux.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1152 from sgrenier/next

Next-sgrenier
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.