Merge git://ozlabs.org/~paulus/gitk

* 'master' of git://ozlabs.org/~paulus/gitk: gitk: Indent word-wrapped lines in commit display header gitk: Comply with XDG base directory specification gitk: Replace "next" and "prev" buttons with down and up arrows gitk: chmod +x po2msg.sh gitk: Update copyright dates gitk: Add Bulgarian translation (304t) gitk: Fix mistype