Add newFileLogger overload accepting file descriptor
Add newFileLogger overload accepting file descriptor

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