[PATCH] Fix for --merge-order, --max-age interaction issue

[PATCH] Fix for --merge-order, --max-age interaction issue

This patch fixes a problem reported by Paul Mackerras regarding the interaction
of the --merge-order and --max-age switches of git-rev-list.

This patch applies to the current Linus HEAD. A cleaner fix for the same problem
in my current HEAD will follow later.

With this change, --merge-order produces the same result as no --merge-order
on the linux-2.6 git repository, to wit:

$> git-rev-list --max-age=1116330140 bcfff0b471a60df350338bcd727fc9b8a6aa54b2 | wc -l
655
$> git-rev-list --merge-order --max-age=1116330140 bcfff0b471a60df350338bcd727fc9b8a6aa54b2 | wc -l
655

Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>