[Magic-dev] maxwidth, widespacing rules fixed

[R. Timothy Edwards]

I have just posted magic version 7.3.68, and I can report that I have
invented a completely new algorithm for the "maxwidth" rule that
catches all violations (in contrast to the old algorithm, which 
would only catch violations if the wide metal was a single tile in
the database.  It was easily subverted, for instance, by having a
contact in the middle of a large metal area).  I also incorporated
the new algorithm into the "widespacing" drc rule, so that one
now catches all wide-metal spacing violations (previously, it
missed quite a few instances).

					---Tim