Merge branch 'jc/report-tracking'

* jc/report-tracking:
  branch -r -v: do not spit out garbage
  stat_tracking_info(): clear object flags used during counting
  git-branch -v: show the remote tracking statistics
  git-status: show the remote tracking statistics
  Refactor "tracking statistics" code used by "git checkout"

diff --cc revision.h
Simple merge

diff --cc wt-status.c
Simple merge