updated ErrStat/ErrMsg arguments on call to OpenFOutFile() to compile with 10-May-2015 version of NWTC Library
updated ErrStat/ErrMsg arguments on call to OpenFOutFile() to compile with 10-May-2015 version of NWTC Library

git-svn-id: 8364067d7f169cd7bffa284e908e01e4e4de2b00@175 96535b8f-fecd-4773-a067-ac893715d582

OpenFAST/OpenFAST,OpenFAST/OpenFAST,OpenFAST/OpenFAST