revision.c: explain what tree_difference does
authorJunio C Hamano <junkio@cox.net>
Wed, 14 Mar 2007 20:12:18 +0000 (13:12 -0700)
committerJunio C Hamano <junkio@cox.net>
Wed, 14 Mar 2007 23:21:19 +0000 (16:21 -0700)
This explains how tree_difference variable is used, and updates two
places where the code knows symbolic constant REV_TREE_SAME is 0.

Signed-off-by: Junio C Hamano <junkio@cox.net>
No differences found