Only use in-tree of this is from calibre, and that's 3.10 only.
Use beautifulsoup4 for tests instead of the older "beautifulsoup" that isn't there anymore.
* python3.8: bulk removal of now obsolete "_python38" packages.
Done via scripting. No functional change intended or expected.
Some manual tweaks will follow.
* python3.8: further manual tweaks after bulk-3.8-removal.
Unlike the previous commit with automated changes,
I've tested builds for *these* recipes in beta4 64 bits.
