Fix Intel .vfproj SubSystem attribute values

The SubSystem attribute value must be "subSystemConsole" or
"subSystemWindows", not "1" or "2".  Commit 20f49730 (Reset
platform/compiler info status for each language, 2010-09-28) exposed
this bug by (correctly) passing the /libs:dll flag to the compiler,
which chokes the linker if a value for "/subsystem:" is not given.

Source/cmLocalVisualStudio7Generator.cxx

@@ -1098,11 +1098,13 @@ void cmLocalVisualStudio7Generator::OutputBuildTool(std::ostream& fout,
       }
     if ( target.GetPropertyAsBool("WIN32_EXECUTABLE") )
       {
-      fout << "\t\t\t\tSubSystem=\"2\"\n";
+      fout << "\t\t\t\tSubSystem=\""
+           << (this->FortranProject? "subSystemWindows" : "2") << "\"\n";
       }
     else
       {
-      fout << "\t\t\t\tSubSystem=\"1\"\n";
+      fout << "\t\t\t\tSubSystem=\""
+           << (this->FortranProject? "subSystemConsole" : "1") << "\"\n";
       }
     std::string stackVar = "CMAKE_";
     stackVar += linkLanguage;