Python3.7: Fix, was not preserving "utf8_mode" in re-exec
Python3.7: Fix, was not preserving "utf8_mode" in re-exec

* This was observed for Fedora 29 on OBS, but should be a general
  issue, but UTF8 mode is not wide spread yet.

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