git-gui: Add a Tools menu for arbitrary commands.
-rwxr-xr-x 1813 GIT-VERSION-GEN
-rw-r--r-- 11490 Makefile
-rwxr-xr-x 1289 git-gui--askpass
-rwxr-xr-x 84983 git-gui.sh
drwxr-xr-x - lib
drwxr-xr-x - macosx
drwxr-xr-x - po
drwxr-xr-x - windows