Make getShapeType() a non virtual function.

Add localGetSupportVertexNonVirtual, localGetSupportVertexWithoutMarginNonVirtual, getAabbNonVirtual and getMarginNonVirtual methods to convex shape classes

src/BulletCollision/CollisionShapes/btCapsuleShape.cpp

@@ -19,7 +19,7 @@ subject to the following restrictions:
 #include "BulletCollision/CollisionShapes/btCollisionMargin.h"
 #include "LinearMath/btQuaternion.h"
 
-btCapsuleShape::btCapsuleShape(btScalar radius, btScalar height)
+btCapsuleShape::btCapsuleShape(btScalar radius, btScalar height) : btConvexInternalShape ()
 {
 	m_upAxis = 1;
 	m_implicitShapeDimensions.setValue(radius,0.5f*height,radius);