OK. I had assumed that backward compatibility was tested in the _renamed
tests, so that these tests one day could be dropped together with
backward compatibility. I didn't notice that my search'n'replaces showed
me that I was wrong.

But a bugfix in a stable release really shouldn't change any tests
unless the tests are wrong. And I can't come up with a reasonable new
test. It could perhaps be tested that all modules could be py2exe'ed and
imported individually with automatic dependency resolving... But such a
test doesn't belong in the test suite.

I suggest that my patch is applied without the test cleanup.