Move btSoftBodySolverData.h to src/BulletMultiThreaded/GpuSoftBodySolvers/Shared/btSoftBodySolverData.h
Attempt to re-enable MiniCL version of OpenCLClothDemo (cloth-capsule collision still broken)
Add optional OpenCL acceleration to SerializeDemo (just for cloth)
Main improvements are: GPU cloth collision detection against a capsule shape
,OpenCL-OpenGL interoperability (keeping data buffers on GPU), and bug fixes
Thanks to Lee Howes