Add support for starting/stopping SysV init scripts

This patch adds initial support for starting a SysV init script in a
runlevel, and stopping it when leaving a runlevel.

    sysv [LVLS] <COND> /path/to/script.sh -- Optional Description

The SysV /etc/inittab file, which may use /etc/init.d, or /etc/rcN.d,
is still not supported.  A separate plugin would be required for this,
see the documentation for more information.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/cond-w.c

@@ -128,6 +128,7 @@ static int svc_has_cond(svc_t *svc)
 	case SVC_TYPE_SERVICE:
 	case SVC_TYPE_TASK:
 	case SVC_TYPE_RUN:
+	case SVC_TYPE_SYSV:
 		return 1;
 
 	default: