Scons: Make sure gcc detection works with CondaCC too.
Scons: Make sure gcc detection works with CondaCC too.

* Actually this is a Scons bug where always the last number is picked,
  but it should be the first, or else it can be wrong, which it is
  for CondaCC.

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