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.
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
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