Windows: Do not share scons cache between Python versions.
Windows: Do not share scons cache between Python versions.

* There won't be any hits, and this avoids migration problems
  with using scons 3.0 and 2.3 inline copies that use different
  databases.

kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka