+ CMake build system fix under Windows: don't define _WINDOWS to allow Glut console demo to build properly

+ Allow user to enable useConvexConservativeDistanceUtil . Use dynamicsWorld->getDispatchInfo().m_useConvexConservativeDistanceUtil = true;
(see Demos/Benchmarks/Benchmark4 (convex objects falling down)
+ Fix for plane drawing (just wire-frame)
+ Gimpact: use collision margin of 0.07 for demo (because BULLET_TRIANGLE_COLLISION is used)
+ replace dot,cross,distance,angle,triple in btVector3 by btDot, btCross,btDistance,btAngle,btDistance to avoid naming conflicts
+ Some fixes in GJK penetration depth normal direction (broken in a previous commit)
+ fix in calculateDiffAxisAngleQuaternion to make ConvexConservativeDistanceUtil work properly
+ allow debug drawing to debug btContinuousConvexCollision
+ add comment/warning that btTriangleMesh::findOrAddVertex is an internal method, users should use addTriangle instead

src/BulletCollision/CollisionDispatch/btDefaultCollisionConfiguration.h

@@ -27,6 +27,7 @@ struct	btDefaultCollisionConstructionInfo
 	btPoolAllocator*	m_collisionAlgorithmPool;
 	int					m_defaultMaxPersistentManifoldPoolSize;
 	int					m_defaultMaxCollisionAlgorithmPoolSize;
+	int					m_customCollisionAlgorithmMaxElementSize;
 	int					m_defaultStackAllocatorSize;
 	int					m_useEpaPenetrationAlgorithm;
 
@@ -36,6 +37,7 @@ struct	btDefaultCollisionConstructionInfo
 		m_collisionAlgorithmPool(0),
 		m_defaultMaxPersistentManifoldPoolSize(4096),
 		m_defaultMaxCollisionAlgorithmPoolSize(4096),
+		m_customCollisionAlgorithmMaxElementSize(0),
 		m_defaultStackAllocatorSize(0),
 		m_useEpaPenetrationAlgorithm(true)
 	{