Deal with broken DNA serialization. Bullet 2.76 release revision 2035 - 2046 was broken, and this includes the Maya Dynamica plugin.
Added some workaround to deal with the broken .bullet files, instead of crashing.
Introduced generated unique id's, instead of the pointer address to avoid 64bit->32bit truncation issues
Use serializer->getUniquePointer instead of directly using a pointer
moved ChunkUtils::getNextBlock to bFile::getNextBlock.
Moved 'TEST_BACKWARD_FORWARD_COMPATIBILITY' to bDNA.cpp. Enable the define for further testing of .bullet format
Removed duplicate definitions and use the one in LinearMath/btSerialization.h
Add flags to disable bvh and triangleinfomap serialization
btSerializer::setSerializationFlags(flags)
flag can have value BT_SERIALIZE_NO_BVH, BT_SERIALIZE_NO_TRIANGLEINFOMAP
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
Serialization: remove obsolete autogenerated headers
Minor changes in btSequentialImpulseConstraintSolver: split methods to make it easier to derive from the class and add functionality.
updated serialization structures and header files (for new 'm_name' field, replacing user pointer)
fix issue with btGeneric6DofConstraint::setParam in headerfile
(no motor support or advanced settings yet)
added btStaticPlaneShape serialization
Added toggle in cmake for BenchmarksDemo to enable/disable graphics rendering
Note that BulletFileLoader is has no dependencies on BulletDynamics/BulletCollision.
Also added a custom build step to copy asset (.bullet and .obj file) into the executable folder
Made a few 'char*' 'const char*' to avoid compiler warnings
