Integrate the stubprocess.py wrapper from Parts#3703

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dirkbaechle wants to merge 4 commits intoSCons:masterfrom dirkbaechle:stubprocess_wrapper

+528-3

Commits on Jun 16, 2020

Commits on Jun 17, 2020

Made the stubprocess wrapper an optional choice for the user.
dirkbaechle
committed

Commits on Jun 20, 2020

Added a note to the actual RELEASE message.
dirkbaechle
committed