supporting O_CLOEXEC and O_NONBLOCK in all file descriptor creating syscalls

[Christos Zoulas]

Hello,

To avoid the race between file descriptor creation and CLOEXEC linux did:

    http://udrepper.livejournal.com/20407.html

I have already implemented the open portion and the guts of pipe2() and dup3()
for COMPAT_LINUX, and it is not a lot of work to finish the rest. Should I
finish it?

christos