Changed BulletMultiThreaded Thread Support to be passed in, rather then global 'Win32ThreadSupport'/'Libspe2ThreadSupport' etc.

This allows developer to hookup Bullet to a custom task scheduler, by deriving from btThreadSupportInterface.

Demos/ConcaveDemo/ConcavePhysicsDemo.cpp

@@ -23,6 +23,8 @@ subject to the following restrictions:
 //#define USE_PARALLEL_DISPATCHER 1
 #ifdef USE_PARALLEL_DISPATCHER
 #include "../../Extras/BulletMultiThreaded/SpuGatheringCollisionDispatcher.h"
+#include "../../Extras/BulletMultiThreaded/Win32ThreadSupport.h"
+#include "../../Extras/BulletMultiThreaded/SpuNarrowPhaseCollisionTask/SpuGatheringCollisionTask.h"
 #endif//USE_PARALLEL_DISPATCHER
 
 
@@ -193,9 +195,27 @@ void	ConcaveDemo::initPhysics()
 
 
 //	btCollisionShape* groundShape = new btBoxShape(btVector3(50,3,50));
-	
+
+
 #ifdef USE_PARALLEL_DISPATCHER
-	btCollisionDispatcher* dispatcher = new	SpuGatheringCollisionDispatcher();
+
+#ifdef USE_WIN32_THREADING
+
+	int maxNumOutstandingTasks = 4;//number of maximum outstanding tasks
+	Win32ThreadSupport* threadSupport = new Win32ThreadSupport(Win32ThreadSupport::Win32ThreadConstructionInfo(
+								"collision",
+								processCollisionTask,
+								createCollisionLocalStoreMemory,
+								maxNumOutstandingTasks));
+#else
+///todo other platform threading
+///Playstation 3 SPU (SPURS)  version is available through PS3 Devnet
+///Libspe2 SPU support will be available soon
+///pthreads version
+///you can hook it up to your custom task scheduler by deriving from btThreadSupportInterface
+#endif
+
+	btCollisionDispatcher* dispatcher = new	SpuGatheringCollisionDispatcher(threadSupport,maxNumOutstandingTasks);
 #else
 		btCollisionDispatcher* dispatcher = new	btCollisionDispatcher();
 #endif//USE_PARALLEL_DISPATCHER