K 10
svn:author
V 3
mat
K 8
svn:date
V 27
2015-08-28T12:28:13.006643Z
K 7
svn:log
V 291
Add generic opt_VARS/opt_VARS_OFF.

OPT1_VARS=  foo=bar baz+=bam

will set FOO to bar and append bam to BAZ if OPT1 is enabled.  <opt>_VARS_OFF
works the same way, if the option is disabled.

Reviewed by:	bapt
Sponsored by:	Absolight
Differential Revision:	https://reviews.freebsd.org/D3410

END