Fix the missing itertools imports after the itertools import was removed from mclevelbase.py, which is import all'ed in a lot of other files

level.py

@@ -5,6 +5,7 @@ Created on Jul 22, 2011
 '''
 
 from box import BoundingBox
+import itertools
 from logging import getLogger
 from mclevelbase import *
 from collections import defaultdict

pocket.py

@@ -150,6 +150,7 @@ class PocketChunksFile(object):
 #        info("Repair complete. Removed {0} chunks, recovered {1} chunks, net {2}".format(deleted, recovered, recovered - deleted))
 #
 #    def extractAllChunks(self, folder):
+#        import itertools
 #        if not os.path.exists(folder):
 #            os.mkdir(folder)
 #        for cx, cz in itertools.product(range(32), range(32)):