multiple uncompyle2 issues: gstarnberger/uncompyle2 #17-30

[rocky]

There are a number of bugs in the unmaintained forks of uncompyle2. I'd like folks to know what those issues are but reporting them in all the forks is a bit tedious. Details can be found in https://github.com/gstarnberger/uncompyle/issues

Periodically I'll up date the numbers in the title.