GitLab

Fixed bug where MonteCarloBarostat would leave molecules seeming to be outside the first periodic box

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

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

Use a consistent (and more accurate) value for electric constant everywhere.  Also cleaned up handling of constants and units in various places.