smartset: move set classes and related functions from revset module (API) These classes are pretty large and independent from revset computation. 2961 mercurial/revset.py 973 mercurial/smartset.py 3934 total revset.prettyformatset() is renamed to smartset.prettyformat(). Smartset classes are aliased since they are quite common in revset.py.

--- a/tests/test-doctest.py	Wed Jan 25 22:39:17 2017 +0900
+++ b/tests/test-doctest.py	Sun Oct 16 17:28:51 2016 +0900
@@ -29,6 +29,7 @@
 testmod('mercurial.pathutil')
 testmod('mercurial.parser')
 testmod('mercurial.revset')
+testmod('mercurial.smartset')
 testmod('mercurial.store')
 testmod('mercurial.subrepo')
 testmod('mercurial.templatefilters')