K 10
svn:author
V 6
rlibby
K 8
svn:date
V 27
2017-09-14T03:41:49.487831Z
K 7
svn:log
V 282
gcc builds: reenable -Wstrict-overflow for bsd.sys.mk

This effectively reverts r304877, after having relegated the warning
suppression to the zic(8) makefile in r323572.

Reviewed by:	emaste
Sponsored by:	Dell EMC Isilon
X-Differential Revision:	https://reviews.freebsd.org/D12284

END