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

MFC after: 1 week
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