Merge git://repo.or.cz/git-gui

* git://repo.or.cz/git-gui: git-gui: adjust the minimum height of diff pane for shorter screen height git-gui: fix use of uninitialized variable git-gui: store wm state and fix wm geometry git-gui: Ensure submodule path is quoted properly git-gui: fix diff for partially staged submodule changes git-gui: Update russian translation git-gui: Limit display to a maximum number of files git-gui: remove warning when deleting correctly merged remote branch git-gui: Added Greek translation & glossary git-gui: display summary when showing diff of a submodule