generally update exitCode only after successful completion of waitpid()
generally update exitCode only after successful completion of waitpid()

tulayang/Nim,jfhg/Nim,jfhg/Nim,russpowers/Nim,russpowers/Nim,jfhg/Nim,dom96/Nim,russpowers/Nim,jfhg/Nim,singularperturbation/Nim,dom96/Nim,dom96/Nim,jfhg/Nim,jfhg/Nim,jfhg/Nim,dom96/Nim,singularperturbation/Nim,tulayang/Nim,singularperturbation/Nim,tulayang/Nim,russpowers/Nim,tulayang/Nim,tulayang/Nim,russpowers/Nim,dom96/Nim,russpowers/Nim,russpowers/Nim,singularperturbation/Nim,dom96/Nim,singularperturbation/Nim,singularperturbation/Nim,dom96/Nim,tulayang/Nim,singularperturbation/Nim