Fix fwd & inverse compatibility issues.
Fix fwd & inverse compatibility issues.

ktavabi/mnefun,drammock/mnefun,kambysese/mnefun,drammock/mnefun,Eric89GXL/mnefun,LABSN/mnefun,Eric89GXL/mnefun,kambysese/mnefun,LABSN/mnefun,ktavabi/mnefun