Fix, the hashing of code objects was not guarding for overlap.
Fix, the hashing of code objects was not guarding for overlap.

* This could lead to a clash of code objects that a class "C" and "C1"
  in the same file, but e.g. on lines 129 and 29, using C129 in the
  hashed string.

* Now using a separator to make sure that cannot happen.

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