GitLab

Restructured how force and energy computations are done to make it easier to write plugins for the CUDA platform

Created a CudaPlatform property for specifying whether CUDA should sync or spin loop while waiting for results

Optimization: introduced a kernel to clear forces at the start of each time step rather than relying on the stream

Implemented dynamic loading of platforms from DLLs.  Also fixed a lot of compilation errors and warnings under Windows.

 * capitalization of gpuTypes.h
 * various cmake issues

Added 'return platform' to registerReferencePlatform() -- VisualStudio complained about no return value
Added #include "../sfmt/SFMT.h" to SimTKOpenMMUtilities.h to get 'uint32_t' declaration

Created a test case for StandardMMForceFieldImpl's findExclusions() method.  Fixed some bugs that it found.  Created a CMake script and configured it for building and running test cases.