GitLab

All platforms now handle nonbonded exceptions in a consistent way (they ignore cutoffs and periodic boundary conditions).  Also started OpenCL implementation of CustomHbondForce.

Increased the tolerance on two tests that started failing when we switched the reference platform to double precision

day when we try it on Windows.
Added "-isysroot /Developer/SDKs/MacOSX10.5.sdk -mmacosx-version-min=10.5" to Mac compile flags,
to possibly help run on Leopard.

OpenCL kernels are now stored into a C++ class at build time rather than installing them as text files.

Add updated platform support for the Khronos approved ICD model so AMD and newer Nvidia drivers on Windows/Linux will work.  Haven't tested Apple