1. Crucial Difference between Spice3f1 and Spice3e2:
  The 'states' field in the ***instance structured has been moved.
  Belongs below the node id's in Spice3e2.
2. Crucial Differences between Spice3f2 and Spice3f1:
  Addition of DEVunSetup call to ***itf.h files
  The 3f2 input parser can't handle arithmetic operators in strings.
  A special call has been added in spiceitf/inpgval.c to specially
  parse strings.  Quotes (either "foobar" or 'foobar') are stripped
  from the string.