adding restructured GPG4Browsers code

- created a test suite available at test/index.html
- fixed a bug in MD5 calculation

test/example-test.js

@@ -0,0 +1,8 @@
+
+unittests.register("Example test", function() {
+	var result = new Array();
+	
+	result[0] = new test_result("test1 - testing on (\"str\" == \"str\")", ("str" == "str"));
+	result[1] = new test_result("test2 - testing on (1 == 1)", (1 == 1));
+	return result;
+});