* compileall: add stripdir, prependdir and limit_sl_dest
* compileall: compile_dir's default value is now None
* compileall: update for current py39 (as of beta1)
Co-authored-by: hauntsaninja <>
* add compileall stubs to 3 and add types to the ones in 2
Didn't merge the stubs because all functions have additional parameters since 3.2,
so there would be no shared code between 2 and 3.
* add comment