Merge branch 'master' of git://repo.or.cz/git-gui into maint
* 'master' of git://repo.or.cz/git-gui:
git-gui: Don't crash in citool mode on initial commit.
git-gui: Remove TODO list.
git-gui: Include browser in our usage message.
git-gui: Change summary of git-gui.
git-gui: Display all authors of git-gui.
git-gui: Use mixed path for docs on Cygwin.
git-gui: Correct crash when saving options in blame mode.
git-gui: Expose the browser as a subcommand.
git-gui: Create new branches from a tag.
git-gui: Prefer version file over git-describe.
git-gui: Print version on the console.
git-gui: More consistently display the application name.
git-gui: Permit merging tags into the current branch.
git-gui: Basic version check to ensure git 1.5.0 or later is used.
git-gui: Refactor 'exec git subcmd' idiom.