- Fixed a bug in Code/GraphMol/MolAlign/testMolAlign.cpp which caused
  data races in the multithreaded test
- Removed a spurious #include in Code/ForceField/Wrap/ForceField.cpp
- Restored caching in Code/GraphMol/Descriptors/Crippen.cpp
Merge pull request #202 from ptosco/master

Fixed data race condition in Code/GraphMol/MolAlign/testMolAlign.cpp