ENH: fix fortran flags on g77 windows

Modules/Platform/Windows-g77.cmake

@@ -14,3 +14,10 @@ SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "")       # -rpath
 SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP "")   # : or empty
 SET(CMAKE_LIBRARY_PATH_FLAG "-L")
 SET(CMAKE_LINK_LIBRARY_FLAG "-l")
+SET (CMAKE_Fortran_FLAGS_INIT "")
+SET (CMAKE_Fortran_FLAGS_DEBUG_INIT "-g")
+SET (CMAKE_Fortran_FLAGS_MINSIZEREL_INIT "-O1")
+SET (CMAKE_Fortran_FLAGS_RELEASE_INIT "-O2")
+SET (CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT "-02 -g")
+
+