Some fixes for supporting python3

* Fix imports.
* Use python3 syntax.
* Wrap map() calls with list().
* Use list() only wherever needed.
  (Thanks Conley!)
* Fix dictionary iteration methods
  (s/iteritems/items/).
* Make use of sorted() in appropriate places
* Use iterators directly in the loop.
* Don't use .keys() wherever it isn't needed.
* Use sys.maxsize instead of sys.maxint

TODO:
* Make repo work fully with python3. :)

Some of this was done by the '2to3' tool [1], by
applying the needed fixes in a way that doesn't
break compatibility with python2.

Links:
[1]: http://docs.python.org/2/library/2to3.html

Change-Id: Ibdf3bf9a530d716db905733cb9bfef83a48820f7
Signed-off-by: Chirayu Desai <cdesai@cyanogenmod.org>

subcmds/__init__.py

@@ -38,8 +38,8 @@ for py in os.listdir(my_dir):
     try:
       cmd = getattr(mod, clsn)()
     except AttributeError:
-      raise SyntaxError, '%s/%s does not define class %s' % (
-                         __name__, py, clsn)
+      raise SyntaxError('%s/%s does not define class %s' % (
+                         __name__, py, clsn))
 
     name = name.replace('_', '-')
     cmd.NAME = name