CVS patchsets are imported with timestamps having an offset of +0000
(UTC). The cvs-authors file is already used to translate the CVS
username to full name and email in the corresponding commit. Extend
this file to support an optional timezone for calculating a user-
specific timestamp offset.
Signed-off-by: Chris Rorvick <chris@rorvick.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>