rpc.statd: move to nfs package

rpc.statd is not technically specific to NFS, but NFS is the only thing
which has ever actually used it, so this is the most appropriate place
to put it.

Reviewed by:	rmacklem, des, bapt, emaste
Approved by:	des (mentor)
Differential Revision:	https://reviews.freebsd.org/D50162

libexec/rc/rc.d/Makefile

@@ -70,7 +70,6 @@ CONFS=	DAEMON \
 	savecore \
 	securelevel \
 	serial \
-	statd \
 	static_arp \
 	static_ndp \
 	stf \
@@ -120,7 +119,8 @@ NFS=			nfsclient \
 			nfsd \
 			nfsuserd \
 			nfscbd \
-			lockd
+			lockd \
+			statd
 NFSPACKAGE=		nfs
 
 CONFGROUPS+=		NEWSYSLOG

usr.sbin/rpc.statd/Makefile

@@ -1,3 +1,4 @@
+PACKAGE= nfs
 PROG=	rpc.statd
 MAN=	rpc.statd.8
 SRCS=	file.c sm_inter_svc.c sm_inter.h statd.c procs.c