tidied up comments in new optimisation functions
tidied up comments in new optimisation functions

oglops/IlmBase,oglops/OpenEXR,oglops/OpenEXR,oglops/PyIlmBase,oglops/IlmBase,oglops/OpenEXR,oglops/PyIlmBase,oglops/IlmBase,oglops/PyIlmBase,oglops/PyIlmBase