The dirprot feature is now disabled by default. Added dirprot option and ruby runtime examples.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@5510 626c5289-ae23-0410-ae9c-e8d60b6d4f22

SWIG/Source/Modules/ruby.cxx

@@ -335,6 +335,9 @@ public:
         if (Getattr(options, "directors")) {
           allow_directors();
         }
+	if (Getattr(options, "dirprot")) {
+          allow_dirprot();
+	}
         if (Getattr(options, "ruby_globalmodule")) {
           useGlobalModule = true;
         }