Add support for adding/removing services from /etc/finit.d at runtime.

This patch adds support for adding and removing services from Finit at
runtime.  Configuration file stanzas for service, run and task may now
be written to files in /etc/finit.d/*.conf, using the exact same syntax
as before in /etc/finit.conf.  When a file is added, removed or modified
the user may simply SIGHUP Finit (PID 1) to activate the changes.

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

finit.conf

@@ -33,8 +33,8 @@ service [2345] /sbin/klogd -n             -- Kernel logging server
 service [2345] /sbin/syslogd -n           -- Syslog server
 service [3] /usr/sbin/gdm                 -- GNOME Display Manager
 
-# By default Finit looks for /etc/finit.d
-# runparts /etc/finit.d
+# Run start scripts from this directory
+# runparts /etc/start.d
 
 # Inetd services
 inetd time/udp                wait [2345] internal          -- UNIX rdate service