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

* git://repo.or.cz/git-gui: git-gui: correct spelling errors in comments git-gui: add menu item to launch a bash shell on Windows. git-gui: corrected setup of git worktree under cygwin. git-gui: right half window is paned git-gui: Add gui.displayuntracked option git-gui: show the maxrecentrepo config option in the preferences dialog git-gui: added gui.maxrecentrepo to extend the number of remembered repos git-gui: Improve font rendering on retina macbooks