Add license note for more GPL-released files.

These were all files included in MIT's 1999 release of SYSDOC and
SYSTEM, so they need the license header.

CHAORD is an XGP text file; XGP processors should ignore unknown
directives so ;comment should work.

doc/sysdoc/chaord.57

@@ -1,3 +1,6 @@
+;comment Copyright (c) 1999 Massachusetts Institute of Technology
+;comment See the COPYING file at the top-level directory of this project.
+;comment ------------------------------
 ;skip 1
 ;list
 ;lftmar 350

doc/sysdoc/chaos.file

@@ -1,4 +1,7 @@
 -*- Mode:Text -*-
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
 
 Description of the CHAOS FILE protocol designed by HIC.
 

doc/sysdoc/clo.100

@@ -1,4 +1,7 @@
 -*-Text-*-						Alan 12/31/83
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
 
 Here is what I know about the core link device(s).
 

doc/sysdoc/devdoc.5

@@ -1,3 +1,6 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
 
 SUBTTL I/O DEVICE DISPATCH TABLES
 

doc/sysdoc/grphcs.21

@@ -1,3 +1,6 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
                This file was moved to MIT-MC from
               MIT-AI by David C. Plummer on 6 June
                   1981, and may be up to date.

doc/sysdoc/intrup.108

@@ -1,3 +1,7 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
+
 Overview of ITS User Interrupts
 
 When ITS wishes to signal a user program of the existence of an

doc/sysdoc/itstty.41

@@ -1,4 +1,7 @@
 -*-TEXT-*- 
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
 
 File: ITSTTY	Node: Top	Next: A			Up: (DIR)
 

doc/sysdoc/job.100

@@ -1,3 +1,7 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
+
 PROGRAMMING TECHNOLOGY DIVISION DOCUMENT                     SYS.xx.yy
 
 

doc/sysdoc/locks.108

@@ -1,4 +1,7 @@
 								-*- Text -*-
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
 
 
 	This file contains documentation for both the LOCK device,

doc/sysdoc/magtap.101

@@ -1,3 +1,7 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
+
 MAG TAPE SPECS
 Copied from memo from S.Cutler 2/23/72
 THIS MEMO CONTAINS MANY LOWER-CASE CHARS

doc/sysdoc/ncp.100

@@ -1,3 +1,7 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
+
 Warning- don't believe everything in this file!
 
 

doc/sysdoc/peek.bugs

@@ -1,3 +1,7 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
+
 Date: Fri,  5 May 89 14:14:14 EDT
 From: Devon Sean McCullough <DEVON@AI.AI.MIT.EDU>
 To: BUG-PEEK@AI.AI.MIT.EDU

doc/sysdoc/tv.100

@@ -1,3 +1,7 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
+
 	A slightly revised TV-11 program is up and running.
 There are the following features/changes:
 

doc/sysdoc/usr.102

@@ -1,3 +1,7 @@
+Copyright (c) 1999 Massachusetts Institute of Technology
+See the COPYING file at the top-level directory of this project.
+------------------------------
+
 JOBS IN ITS