Version 4.0.4
26 August 2004

  -make memtester's exit code meaningful.  See the manpage for its meaning.
  Thanks to Wurzel Parsons-Keir, who sent a patch for the code, so I only had
  to document it.

Version 4.0.3
10 August 2004

  -small changes to enable building with dietlibc and a few other environments
  that don't even attempt to provide the various Posix definitions.
  -cosmetic fixes to output.
  -restore the reduce-and-retry loop of memory locking from version 2.

Version 4.0.2
9 August 2004

  -add manpage

Version 4.0.1
8 August 2004

  -fix cosmetic bugs in output

Version 4.0.0
7 August 2004

  -rewrite to clean up the code (previously an ugly hack), for 64-bit
  cleanliness
  -change build system to build on (hopefully) any platform.  Previous
  versions required hackery on some systems.

Version 3 not publicly released.
