vchoi_fork

Merge pull request #1034 in HDFFV/hdf5 from fix_api_context_fix to develop

* commit 'bcab84db9f291920ed0fe321116405f73eaddfa5':
  Resolve memory leak of last API context, by freeing it in H5CX terminate routine.
  Revert "Close memory leak of last API context when shutting library down."