Removed b3RigidBodyCL, replace by b3RigidBodyData and b3RigidBodyData_t shared between C++ host and OpenCL, Same for b3InertiaCL -> b3InertiaData
and embed the included files directly in the stringified files. We need this, because we start sharing struct definitions and code between C/C++ and OpenCL (and potentially other languages) preprocessor is from http://github.com/willsteel/lcpp
more preparation towards persistent/incremental contact cache