[COMMIT] Make the majority of tests in tests/automated/mule-tests.el work again.

[Stephen J. Turnbull]

Aidan Kehoe writes:

 > Not throwing away all of the byte compile warnings would be a
 > start, I suppose.

Somebody, probably Martin, wrote that that's deliberate.  A lot of the
stuff there deliberately tests edge cases, etc.  "This comment may
have no validity whatsoever" (that one is from a comment ragging on
Xlib or Xt, but it may apply here too).

 > Anyway, here’s a fix.

Thank you!