nerge stable 2649:2650 test_lib_utils.py: fix race in temp creation
nerge stable 2649:2650 test_lib_utils.py: fix race in temp creation

kanarelo/reportlab,kanarelo/reportlab,kanarelo/reportlab,Distrotech/reportlab,Distrotech/reportlab,kanarelo/reportlab,Distrotech/reportlab,Distrotech/reportlab,kanarelo/reportlab,Distrotech/reportlab