Subject: bug#1589: git's "--relative" option is relatively new :)

From: "Eric Hanchrow" <[email-masked]>
Date: Fri, 26 Dec 2008 11:13:58 -0800

The above fix relies on the "--relative" option to the 'git
diff-index' command.  That option came into being in git 1.5.5, which
was released in April 2008.