Replace verbose and kernel quiet modes with silent and quiet

This patch replaces the verbose and kernel-quiet runtime options with
a (hopefully) more useful quiet and silent modes of operation.

By default Finit progressively shows all services it starts at boot, but
when boot has completed and services are started/restarted Finit prints
nothing.  If `--disable-quiet` is given all started/restared/stoppping
messages are shown even after boot.

However, if `--enable-silent` is given Finit is completely silent even
at boot, no progress is shown, until the first service is started, which
on most systems is login.

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

helpers.c

@@ -142,7 +142,7 @@ void print(int action, const char *fmt, ...)
 	const char pending[] = " \e[1m[ \\/ ]\e[0m\n";
 	const char dots[] = " .....................................................................";
 
-	if (!verbose)
+	if (silent)
 		return;
 
 	if (fmt) {