use makedirs instead of mkdir to allow creating subdirectories directly
use makedirs instead of mkdir to allow creating subdirectories directly

Fixes a crash when using --output-dir /tmp/foo/ if foo does not exist

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