README at [4596d49a10]

File README as of check-in [4596d49a10]


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)