git-gui: Add or unstage based on the specific icon used.
-rw-r--r-- 36 .gitignore
-rwxr-xr-x 745 GIT-VERSION-GEN
-rw-r--r-- 1200 Makefile
-rw-r--r-- 1948 TODO
-rwxr-xr-x 90799 git-gui.sh