Add the service-start script graciously

Submitted by:	Johan Hendriks

(Do not know, how it escaped me to make one up myself.)

sysutils/incron/Makefile

@@ -3,6 +3,7 @@
 
 PORTNAME=	incron
 DISTVERSION=	2017-11-13
+PORTREVISION=	1
 CATEGORIES=	sysutils
 
 MAINTAINER=	mi@aldan.algebra.com
@@ -24,6 +25,7 @@ LDFLAGS+=	-L${LOCALBASE}/lib -linotify
 MAKE_ARGS=	PREFIX="${PREFIX}" USER=${UID}	\
 		DOCDIR="${PREFIX}/etc"	\
 		MANPATH=${MANPREFIX}/man
+USE_RC_SUBR=	${PORTNAME}
 
 post-patch:
 	${REINPLACE_CMD} -e 's,/etc/incron,${PREFIX}/etc/incron,'	\

sysutils/incron/files/incron.in

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+# PROVIDE: incrond
+# REQUIRE: DAEMON
+# KEYWORD: shutdown
+#
+# Add the following lines to /etc/rc.conf.local or /etc/rc.conf to
+# enable incrond:
+#
+# incrond_enable (bool): Set to NO by default.  Set it to YES to
+#         enable incrond.
+# incrond_config (string): Set to the standard config file path by
+#         default.
+#
+
+. /etc/rc.subr
+
+name="incrond"
+rcvar=incrond_enable
+
+load_rc_config $name
+
+: ${incrond_enable:=NO}
+: ${incrond_config:=%%PREFIX%%/etc/incron.conf}
+
+command="%%PREFIX%%/sbin/${name}"
+required_files="${incrond_config}"
+
+run_rc_command "$1"