reverted one of Qi's changes because it gave me the wrong answers in FAST certification test 26
reverted one of Qi's changes because it gave me the wrong answers in FAST certification test 26

Former-commit-id: 87654f245a7b5b1cd74b4dbc4eeaf25d0f1c3b2d
OpenFAST/OpenFAST,OpenFAST/OpenFAST,OpenFAST/OpenFAST