do like the others, and when cascading to root, do it through

Container, this prevents the root Container from being rescanned
all the time...  Also make the root Container be able to grow
beyond 2^32...

[git-p4: depot-paths = "//depot/": change = 1127]

DIDLLite.py

@@ -274,9 +274,11 @@ class Container(Object, list):
 		list.__init__(self)
 
 	def doUpdate(self):
-		self.updateID = (self.updateID + 1) % (1l << 32)
-		if self.id != '0':
-			self.cd['0'].doUpdate()
+		if self.id == '0':
+			self.updateID = (self.updateID + 1)
+		else:
+			self.updateID = (self.updateID + 1) % (1l << 32)
+			Container.doUpdate(self.cd['0'])
 
 	def toElement(self):