and forcing it to be passed as an argument to all the callback
functions for the search routines that require it. Magic now
compiles and runs with the new code, but there are a number of
known issues that need to be fixed up. Committing now so that
I can rebase on the last update to the master branch.
8.2.74. Top-level port names are now flagged independently of
any subcircuit port, so they are easier to identify when determining
naming precedence for the net. This makes the code cleaner and
removes the problems arising from non-top-level ports and global
names overriding the subcircuit port names.
R. Timothy Edwards