INTEGRATE_THRESHOLD ever changed?

[Jeffrey A Law]

  In message < 38D296A1.1A4F13BB@apple.com >you write:
  > > I see a comment saying "This is overridden on RISC machines" -- if that's
  > > a lie, the comment should be changed.
  > 
  > Grepping through all the sources and subdirs didn't show me *anything*
  > that changed it, so if it's being overridden on RISC machines, it must
  > done in some way that's too subtle for me to see it - wouldn't be the
  > first time that's happened though! :-)
I believe that comment is a lie.  Though we do allow ports to override
its value.  I believe the only port doing that right now is the avr.

The comment definitely needs to be fixed -- the only question in my mind is
whether or not it's worth allowing ports to override this parameter at all.

jeff