Add some basic tests of rev-list --pretty=format
Add some basic tests of rev-list --pretty=format

These could stand to be a little more complex, but it should
at least catch obvious problems (like the recently fixed %ct
bug).

Signed-off-by: Jeff King <696e3fbcf235d40b6ea1ebd61c87cbea79d444e7@peff.net>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

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