Martin von Zweigbergk <martinvonz@google.com> [Thu, 22 Jun 2017 13:58:20 -0700] rev 33036
bundle: move combineresults() from changegroup to bundle2
The results only need to be combined if they come from a bundle2. More
importantly, we'll change its argument to a bundleoperation soon, and
then it definitely will no longer belong in changegroup.py.