git-gui: Fix "Stage/Unstage Line" with one line of context.
tree0312dc18b9c15e9e3d00cd9f27d306d0ad822c26
-rw-r--r-- 97 .gitignore
-rwxr-xr-x 1813 GIT-VERSION-GEN
-rw-r--r-- 11186 Makefile
-rwxr-xr-x 74243 git-gui.sh
drwxr-xr-x - lib
drwxr-xr-x - macosx
drwxr-xr-x - po
drwxr-xr-x - windows