Merge branch 'master' of git://repo.or.cz/git-gui
* 'master' of git://repo.or.cz/git-gui:
git-gui: Internalize symbolic-ref HEAD reading logic
git-gui: Expose the merge.diffstat configuration option
git-gui: Allow users to delete remote branches
git-gui: Allow users to rename branches through 'branch -m'
git-gui: Disable tearoff menus on Windows, Mac OS X
git-gui: Provide fatal error if library is unavailable
git-gui: Enable verbose Tcl loading earlier
git-gui: Show the git-gui library path in 'About git-gui'
git-gui: GUI support for running 'git remote prune <name>'
git gui 0.8.0