forking can now be disabled using MULTIPROCESSING_FORKING_DISABLE envvar
forking can now be disabled using MULTIPROCESSING_FORKING_DISABLE envvar

pombredanne/billiard,jakirkham/billiard,andresriancho/billiard,djsmith42/billiard,pombredanne/billiard,flaviogrossi/billiard,jakirkham/billiard,djsmith42/billiard,flaviogrossi/billiard,andresriancho/billiard