MFC r292507,r292508:

r292507:

• Use LOCALBASE instead of KYUA_PREFIX for the --prefix to kyua(1)
• Use LOCALBASE instead of hardcoding /usr/local for perl

Differential Revision: https://reviews.freebsd.org/D4406 (part of a larger diff)
Reviewed by: emaste, Evan Cramer <eccramer@gmail.com>
Sponsored by: EMC / Isilon Storage Division

r292508:

Document LOCALBASE in the bsd.test.mk section

Differential Revision: https://reviews.freebsd.org/D4406 (part of a larger diff)
Reviewed by: emaste, Evan Cramer <eccramer@gmail.com>
Sponsored by: EMC / Isilon Storage Division