(1) Add USES perl5 and add RUN_DEPENDS for perl modules needed by the

various perl scripts installed by this port

(2) Use ${PORTSDIR}/mail/sendmail/bsd.milter.mk to link against

libmilter installed by the mail/sendmail port when
WITH_SENDMAIL_PORT=yes is set in /etc/make.conf or the base
libmilter if WITH_SENDMAIL_BASE=yes

PR: 202374 (1)
Submitted by: freebsd-ports@dan.me.uk (1) matthew (2)
Reviewed by: pi (1)
Approved by: maintainer timeout (>14days)