Log Message:
Update to 4.0.2. From the README:

    The version 4 rewrite was mainly to accomplish three things:

    (1) the previous code was basically a hack, and was ugly.
    (2) to make the code more portable.  The previous version required some
        hackery to compile on some systems.
    (3) to make the code fully 64-bit aware.  The previous version worked
        on 64-bit systems, but did not fully stress the memory subsystems
        on them -- this version should be better at stress-testing 64-bit
        systems.

pkgsrc changes:
* Use the gzipped tarball (the bzipped one is no more).
* Tweak COMMENT.
* GNU make is no longer needed.