system, exploit cmd.exe's setlocal function in this directory.

Replaced outcomes from native Tcl/Tk tests.  Maybe the diffs are legit,
maybe not.  I noticed that the Tcl results I'm replacing here claimed
both that there were no failures, and that one file had tests with
failures, so I wasn't inclined to trust them <wink>.

actually run.  When it fails, it pops up a dialog box, and the test run
hangs waiting for you to click OK -- that sucks too much to bear.

The -tt means modules that mix tabs and spaces will be rejected.
The -E refuses to believe Python options in the environment.

reachable from Lib/.

between passes:  Win9x DOS boxes are limited to 50 lines max, and the result
of the first pass scrolls off irretrievably otherwise.  Also simplified
the goto-laden logic a bit.

New option "-q" to leave .pyc/.pyo alone.

tests for the first time -- like the Unix Makefile does.  This
avoids not catching problems in the bytecode generator and/or bytecode
marshalling.

directory less tedious.