Fix, in-place assignments from "or" and "and" could loose references.
Fix, in-place assignments from "or" and "and" could loose references.

* This could easily lead to corruption or crashes of the program
  later on.

* This corrects Issue#197.

kayhayen/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,kayhayen/Nuitka,tempbottle/Nuitka,tempbottle/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,wfxiang08/Nuitka,wfxiang08/Nuitka,kayhayen/Nuitka