revset: move to new style import
This unify with the new core Mercurial usage and this will make future changes
to the imports easier to track.
--- a/hgext3rd/topic/revset.py Wed Mar 30 03:44:59 2016 -0700
+++ b/hgext3rd/topic/revset.py Wed Mar 30 03:45:10 2016 -0700
@@ -1,9 +1,17 @@
-from mercurial import error
-from mercurial import revset
-from mercurial import util
+from __future__ import absolute_import
+
from mercurial.i18n import _
+from mercurial import (
+ error,
+ revset,
+ util,
+)
-from . import constants, destination, stack
+from . import (
+ constants,
+ destination,
+ stack,
+)
try:
mkmatcher = revset._stringmatcher