+ 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/LinearMath/btMatrix3x3.h

@@ -503,7 +503,7 @@ class btMatrix3x3 {
 	SIMD_FORCE_INLINE btScalar 
 	btMatrix3x3::determinant() const
 	{ 
-		return triple((*this)[0], (*this)[1], (*this)[2]);
+		return btTriple((*this)[0], (*this)[1], (*this)[2]);
 	}