GitLab

Add relevant tests (that used to fail). This also fixes a subtle bug where
switching functions were not applied when NBFIXes were specified.

Now that I have my head on straight, that is.

Hard-code CC and CXX to clang for Macs, since gcc/g++ will *not* work with
Anaconda, despite the fact that distutils will try to use them.  System Python,
homebrew, and MacPorts on Macs will always use clang, so this hack should always
work and fix issues with users that have GCC installed from MacPorts or homebrew
*and* Anaconda.

and DrudeLangevinIntegrator.

and VariableLangevinIntegrator

right).  Add a test for AmoebaMultipoleForce.

- Remove API change for AmoebaAngleForce so it goes back to only taking degrees.
  Handle conversion via a pythonprepend (since stripUnits is done in C++ now).
- Do the same thing for TorsionTorsionForce, since angles are in degrees again
- Add AmoebaVdwForce and AmoebaWcaForce tests

work for the input variable type.