Created tasks & inter-thread synchronization refactoring branch.
Added new inter/intra-task messaging stuff (Router and related classes.)
Added EASTL as a submodule.
Fixed missing / misplaced files.
More message router work.
Connected various dots.
Fixed build issues.
More progress towards tasky goodness.
Fixed task filtering.
Implemented StandardProperty.
Implemented concurrent read / write component property for the physics system.
Moved EASTL to the "external" folder.
Added dll stuff.