Merge branch 'master' of https://github.com/j6t/git-gui

* 'master' of https://github.com/j6t/git-gui: git-gui: grey out comment lines in commit message git-gui: wire up "git-gui--askyesno" with Meson git-gui: massage "git-gui--askyesno" with "generate-script.sh" git-gui: prefer shell at "/bin/sh" with Meson git-gui: fix use of GIT_CEILING_DIRECTORIES git-gui: shift tabstops to account for the first column of patch text