GitLab

Converted the routine for identifying molecules from a recursion to a loop.  This avoids stack overflows with very long linear molecules.

Platform specific header files get installed.  This allows plugins to be built with just an OpenMM installation, not a full source tree.

Using a const Vec3& instead of three doubles for the AnisotropicBarostat API.  Still figuring out SWIG issues.

Long range correction for both NonbondedForce and CustomNonbondedForce takes the switching function into account

Removed redundant overload of == operator in AssertionUtilities.h. Removed extraneous version check for serialized integrators and state. Updated unit test to include more details. 

Completed support for serialization of all integrator types. Modified Assertion utilities to allow ASSERT_EQUAL to work on strings. Updated unit tests for testSerializeIntegrators.