git-gui: add search history to searchbar
git-gui: add search history to searchbar

Use the up/down keys to browse the history.

Signed-off-by: Bert Wesarg <0d62a3713d750bb3a7440aad892eb1fd24c11fa3@googlemail.com>
Signed-off-by: Pat Thoyts <fe43a83262eef1680511f524a1e74d43c633cffe@users.sourceforge.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git