acl: use absolute_import

Continuing the march towards Python 3.

hgext/acl.py

@@ -191,9 +191,17 3) Deny access to a file to anyone but u
 
 '''
 
+from __future__ import absolute_import
+
+import getpass
+import urllib
+
 from mercurial.i18n import _
-from mercurial import util, match, error
-import getpass, urllib
+from mercurial import (
+    error,
+    match,
+    util,
+)
 
 # Note for extension authors: ONLY specify testedwith = 'internal' for
 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should

tests/test-check-py3-compat.t

@@ -32,7 +32,6
   doc/gendoc.py not using absolute_import
   doc/hgmanpage.py not using absolute_import
   hgext/__init__.py not using absolute_import
-  hgext/acl.py not using absolute_import
   hgext/blackbox.py not using absolute_import
   hgext/bugzilla.py not using absolute_import
   hgext/censor.py not using absolute_import