Log Message:
Changes 5.42.1:
* Removed beta designation.
* Daniel A. Steffen <steffen@ics.mq.edu.au> provided patch for
  MacOS to avoid panic-redefinition.

Changes 5.41.0:
* Simon Taylor <simon@unisolve.com.xau> provided fix for
  interact -o which was completely broken by 5.40.1.

Changes 5.40.1:
* Added scroll support to official tkterm.  Copied all fixes
  from/to term_expect to/from tkterm.
* Kiran Madabhushi <maskiran@hotmail.xcom> encountered interact
  diagnostics incorrectly pointing to expect_background.  Also,
  found multiple -o flags behaving unexpectedly.  Added diag.

* Kristoffer Eriksson <ske@pkmab.xse> noted typo in SIMPLE code
  in exp_inter.c.  However, this is extremely unlikely to affect
  any machines.

* Reinhard Max <max@suse.xcom> noted that "make test" failed when
  run in the background.  The log testcase was testing the
  send_tty command.  Added code in both Expect and in the test
  to handle this.