had one error and one missing method. The error was an incorrect
argument count for regular (not subcircuit) FETs and BJTs. The
missing method was to handle parameters w0, w1, w2, etc., like
l0, l1, l2, . . . Those had been defined for output in ExtBasic.c
but were not being handled on input from the .ext file. This fix
corresponds more or less to PR #480 on github, although that PR
incorrectly addressed the argument numbering problem, so I have
redone the code changes by hand.