fix problem where sel in extension objects was always winding up undefined

kis.js

@@ -69,6 +69,13 @@
 		// Make a copy before adding properties
 		var self = dcopy($_);
 
+		// Give sel to each extension.
+		for(var i in self) 
+		{
+			if(typeof self[i] === "object")
+				self[i].el = sel;	
+		}
+
 		self.el = sel;
 	
 		return self;