K 10
svn:author
V 3
cem
K 8
svn:date
V 27
2018-06-15T19:02:53.582526Z
K 7
svn:log
V 350
Retain offset compatibility with pre-12.0 dumps

As a follow-up to r324965, which adds support for compressed kernel dumps,
readjust dump header members slightly to mostly preserve ABI with earlier
(11.x and older) dumps.

Reviewed by:	markj
X-MFC-With:	r324965
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D15829

END