tree 91808335312334ac1b4f0aa97c5e3a8f84d152ce
parent 754f66afb76f59bb4c43f303fb9406a3841a448f
author Szabolcs Nagy <nsz@port70.net> 1505253860 +0000
committer Rich Felker <dalias@aerifal.cx> 1509925284 -0500

add new fcntl.h macros from linux v4.13

for getting/setting write lifetime hints fcntl commands were
added in linux commit c75b1d9421f80f4143e389d2d50ddfc8a28c8c35

added under _GNU_SOURCE || _BSD_SOURCE, since RWH_* life time
hints are not in the POSIX reserved namespace.