[PATCH] Revision numbers should be stable

[Michal H. <ms...@gm...>]

This patch changes the way how we number revisions. See the detailed
description in the patch.

I think that this changes makes sense and we should apply it, but I
would like to hear from you before I commit it.

I have tested it and it seems that there are no regressions.

Thanks
-- 
Michal Hocko