Move etc/minfree to sbin/savecore/.

This is prep for pkgbase to have config files tagged as such.

Approved by:	will (mentor)
Differential Revision:	https://reviews.freebsd.org/D16558

etc/Makefile

@@ -271,8 +271,6 @@ distribution:
 	${INSTALL} -o nobody -g ${BINGRP} -m 644 /dev/null \
 	    ${DESTDIR}/var/db/locate.database
 .endif
-	${INSTALL} -o ${BINOWN} -g ${BINGRP} -m 644 ${.CURDIR}/minfree \
-	    ${DESTDIR}/var/crash
 	cd ${.CURDIR}/..; ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m 444 \
 		${FREEBSD} ${DESTDIR}/
 .if ${MK_BOOT} != "no"

sbin/savecore/Makefile

@@ -1,6 +1,8 @@
 # $FreeBSD$
 
 PACKAGE=runtime
+CONFS=	minfree
+CONFSDIR=	/var/crash
 PROG=	savecore
 LIBADD=	z xo
 MAN=	savecore.8