Add support to serialize btOptimizedBvh/btQuantizedBvh for a btBvhTriangleMeshShape (using the new btSerializer). This is a new implementation, with full cross-platform support.

So it is different from the in-place method (btQuantizedBvh::serializeInPlace/deserializeInPlace).

It is also possible to serialize/deserialize just the bvh, using the btSerializer (needs some code snippet/helper)
See also http://bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=4770

Extras/Serialize/BulletFileLoader/btBulletFile.cpp

@@ -162,6 +162,11 @@ void btBulletFile::parseData()
 				m_constraints.push_back((bStructHandle*) id);
 			}
 
+			if (dataChunk.code == BT_QUANTIZED_BVH_CODE)
+			{
+				m_bvhs.push_back((bStructHandle*) id);
+			}
+
 			if (dataChunk.code == BT_COLLISIONOBJECT_CODE)
 			{
 				m_collisionObjects.push_back((bStructHandle*) id);