Some more slight doco fixes: update date, and add a bit more to the history.

libexec/tftpd/tftpd.8

@@ -32,7 +32,7 @@
 .\"	@(#)tftpd.8	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 4, 1993
+.Dd September 14, 2000
 .Dt TFTPD 8
 .Os BSD 4.2
 .Sh NAME
@@ -160,4 +160,12 @@ The user must be specified by name, not a numeric UID.
 The
 .Nm
 command appeared in
-.Bx 4.2 .
+.Bx 4.2 ;
+the
+.Fl s
+option was introduced in
+.Fx 2.2 ,
+and the
+.Fl u
+option was introduced in
+.Fx 4.2 .