ENH: Add basic flags for Portland Group fortran compiler.

Modules/Platform/Linux-PGI-Fortran.cmake

@@ -1 +1,9 @@
 SET(CMAKE_SHARED_LIBRARY_LINK_Fortran_FLAGS "")
+
+SET(CMAKE_Fortran_MODDIR_FLAG "-module ")
+SET(CMAKE_Fortran_FLAGS_INIT "-Mpreprocess -Kieee -fpic")
+SET(CMAKE_Fortran_FLAGS_DEBUG_INIT "-g -O0 -Mbounds")
+SET(CMAKE_Fortran_FLAGS_MINSIZEREL_INIT "-O2 -s")
+SET(CMAKE_Fortran_FLAGS_RELEASE_INIT "-fast -O3 -Mipa=fast")
+SET(CMAKE_Fortran_FLAGS_RELWITHDEBINFO_INIT "-O2 -gopt")
+