Conditionally install /etc/rc.d/audit* based on ${MK_AUDIT}

/usr/sbin/audit(dist)?d are only installed if ${MK_AUDIT} == yes. Their
supporting scripts should only be installed in those instances as well.

Submitted by:	ngie
Reviewed by:	emaste
MFC after:	2 weeks
Pull Request:	https://github.com/freebsd/freebsd/pull/242

libexec/rc/rc.d/Makefile

@@ -15,8 +15,6 @@ CONFS=	DAEMON \
 	addswap \
 	adjkerntz \
 	archdep \
-	auditd \
-	auditdistd \
 	bgfsck \
 	${_blacklistd} \
 	${_bluetooth} \
@@ -164,6 +162,12 @@ APM+=		apmd
 APMPACKAGE=	apm
 .endif
 
+.if ${MK_AUDIT} != "no"
+CONFGROUPS+=	AUDIT
+AUDIT+=		auditd
+AUDIT+=		auditdistd
+.endif
+
 .if ${MK_AUTOFS} != "no"
 CONFS+=		automount
 CONFS+=		automountd

tools/build/mk/OptionalObsoleteFiles.inc

@@ -147,6 +147,8 @@ OLD_FILES+=usr/share/man/man3/unistruct.3.gz
 .endif
 
 .if ${MK_AUDIT} == no
+OLD_FILES+=etc/rc.d/auditd
+OLD_FILES+=etc/rc.d/auditdistd
 OLD_FILES+=usr/sbin/audit
 OLD_FILES+=usr/sbin/auditd
 OLD_FILES+=usr/sbin/auditdistd