ConfigurationInfo.java

        /*
        our classloader's classpath may contain more than one .jar, each with a manifest.
        we need to ensure we get our own .jar's manifest, even if the jar is not first on the path.
        we also need to deal with vfs, which does weird things to pathToThisClass e.g.
          normal: jar:file:/foo/bar.jar!/com/arjuna/common/util/ConfigurationInfo.class
          vfszip:/foo/bar.jar/com/arjuna/common/util/ConfigurationInfo.class
        In short, this path finding code is magic and should be approached very cautiously.
         */