git.el: Prepend a slash to the file name when adding to .gitignore.

This way the ignore command will really only ignore the marked files
and not files with the same name in subdirectories.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

contrib/emacs/git.el

@@ -258,7 +258,7 @@ and returns the process output as a string."
     (set-buffer (find-file-noselect ignore-name))
     (goto-char (point-max))
     (unless (zerop (current-column)) (insert "\n"))
-    (insert name "\n")
+    (insert "/" name "\n")
     (sort-lines nil (point-min) (point-max))
     (save-buffer))
   (when created