Merge git://git.kernel.org/pub/scm/gitk/gitk into maint

* git://git.kernel.org/pub/scm/gitk/gitk:
  Make gitk save and restore window pane position on Linux and Cygwin.
  Make gitk save and restore the user set window position.
  [PATCH] gitk: Use show-ref instead of ls-remote
  [PATCH] Make gitk work reasonably well on Cygwin.
  [PATCH] gitk - remove trailing whitespace from a few lines.
  Change git repo-config to git config