Merge branch 'master' into next

* master:
  gitk: show_error fix
  [PATCH] gitk: start-up bugfix
  [PATCH] gitk: Replace "git-" commands with "git "
  [PATCH] gitk: Display commit messages with word wrap
  gitk: Fix bug where page-up/down wouldn't always work properly
  gitk: Fix display of "(...)" for parents/children we haven't drawn