nwrite: write replacement
  Copyright 1993 by Marco Nicosia <marco@csua.berkeley.edu>
  Copyright 1994-95 by Aaron Smith <aaron@csua.berkeley.edu>
  Copyright 1995-97 by Alan Coopersmith <alanc@csua.berkeley.edu>
  All rights reserved.  (see README for license details)

Version 1.9.2 07/09/98
 Switched to GNU autoconf for portability checking
 Added support for system nwriterc to set defaults
 Use snprintf on platforms that have it
	
Version 1.9.1 11/15/97
 NetBSD #defines contributed by Dave Bushong <dbushong@CSUA.Berkeley.EDU>
 Use UTMP_FILE, if defined, instead of /etc/utmp for OS'es like Digital Unix
	that hide utmp elsewhere
 Cleanup for public release

Version 1.9  08/19/96
 Cleaned up portability #defines
 Added portability info for Apollo Domain/OS 10.4, HP/UX 9.0x
 Fixed bug in creating line-prefix tag (bolding broken, random chars inserted)
 Removed limit on length of login name (since not all OS'es limit to 8 chars)
 Made error messages more user-friendly
 Expanded debug-mode output
 Moved init_globals() call later to avoid wasting time if there's a 
   command line usage error (and to allow setting -D flag first)

Version 1.8  08/11/96
 Fix core dump bug
 Fix bug with lame terminals that don't deal well with BOLD_END if they
   didn't previously get a BOLD_START (the Eric Rowe memorial bug)
 Ultrix 4.4 port

Version 1.7  10/30/95
 Solaris 2.x port

Version 1.6  09/26/95
 More POSIX-ification & portability
 Switch to tty_info_t & local_user_t & revised user_t structures
 Beginning of support for remote users (no network code yet though)
 Skip blank utmp lines when parsing utmp
 Make argv clearing code dependent on definition of CLEAR_PROCS
 More friendly/useful error messages
 If tty is specified use it even if -i specified and it's idle
 Don't send headers to people who want them sent right away until after all
  ttys are opened and unopenable ttys have been removed from the
  "writing to" list

Version 1.5  07/24/95
 Ported to AIX - support started for other POSIX and/or SysV systems
 optimized to stop looking through utmp when all users found
 added debug mode

Version 1.4  06/15/95
 more speedups
 allow 'nwrite user tty' syntax

Version 1.3  05/22/95
 code cleanup

Version 1.2  05/16/95        
 Alan Coopersmith takes over nwrite
 many bug fixes and speedups

Version 1.16 05/09/95 
 last version by Aaron Smith

<exact version details before this point lost in the mists of time>

Spring 1995 additions by Aaron Smith:
 writing to multiple users

Summer 1994 additions by Aaron Smith:
 .nwriterc options (bolding, nodelay, beep, etc.)

Created Summer 1993 by Marco Nicosia
