Memtester

2nd Release, fixes memory trashing bug, thanks to Olsen for pointing it out :)

3rd Release now its no longer requered with a Size Argument, when left out 
 largest possible memblock is used.

About memtester
  
    memtester is a utility for testing the memory subsystem in a computer to
    determine if it is faulty. The original source was by Simon Kirby
    <sim()stormix.com>. I have by this time completely rewritten the
    original source, and added many additional tests to help catch
    borderline memory. I also rewrote the original tests (which catch
    mainly memory bits which are stuck permanently high or low) so that
    they run approximately an order of magnitude faster.
   
    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.