This patch modifies the DOS version of Williams Arcade Classics to remove
the code that bypasses the "rug test" power-up self-test diagnostic.  It
cannot be undone, so keep a copy of the unmodified version.

To run, put these two batch files in the same directory as BUBBLES.EXE,
DEFENDER.EXE, etc. and run RUGTEST.BAT from the DOS prompt.

