hg: jdk9/hs-rt/hotspot: 8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)

[david.holmes at oracle.com]

Changeset: 6fc3b8261368
Author:    martin
Date:      2014-07-01 13:29 -0700
URL:       http://hg.openjdk.java.net/jdk9/hs-rt/hotspot/rev/6fc3b8261368

8043780: Use open(O_CLOEXEC) instead of fcntl(FD_CLOEXEC)
Summary: Use open(O_CLOEXEC) where available; fall back to FD_CLOEXEC when necessary
Reviewed-by: rasbold, dholmes

! src/os/linux/vm/os_linux.cpp