Merge upstream PRs manually#1

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tucked merged 3 commits intomasterfrom

Mar 31, 2021

Commits on Jul 9, 2018

build one package with two extensions
twAlexM
committed

Commits on Apr 17, 2020

added METH_VARARGS to PyKAdminPrincipal_modify in PyKAdminPrincipal_methods[] for Python 3 _ctypes compatibility
Maciek Nowacki
committed

Commits on Mar 31, 2021

Merge remote-tracking branch 'ualberta-iapps/master' into tmp
tucked
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