FIX: Handle the unquoting of namespaces within Configuration.getvar() properly. BUGS: The "ref" namespace is handled specially and not yet compatible with escaping some character of the "ref:" marker.

{"key1": "in the root namespace",
 "key2": "in the root namespace -- too",
 "tree1": {
     "key3": 32,
     "tree2": {
	 "key4": "get this as `tree1.tree2.key4'",
	 "key5": true
     }
 }
}