File README artifact 0dae6d03cb part of check-in 80da1b203b

Tested platforms:
  Mac OS X 10.1
  HP-UX 11.11
  NetBSD 1.6.1
  FreeBSD 4.8
  OpenBSD 3.4
  SunOS 5.9
  Linux (Slackware, RedHat, Fedora Core, Debian)
  IRIX 6.5