Merge branch 'maint'

* maint:
  t7401: squelch garbage output
  Documentation/git-submodule: typofix
  Fix config key miscount in url.*.insteadOf
  Docs gitk: Explicitly mention the files that gitk uses (~/.gitk)
  Document -w option to shortlog
  bisect: report bad rev better

diff --cc git-bisect.sh
Simple merge