[Scripts] Fix setupvars notification messages and python call#2318

Merged

azhogov merged 1 commit intoopenvinotoolkit:releases/2021/1from artanokhov:aa/setupvars-update-notifications

Sep 17, 2020

+17-10

Commits on Sep 17, 2020

setupvars: Updated notifications, fixed calling python in Windows case
artanokhov
committed