New syscalls that take an flag argument.   No flags are added yet in this
patch.
Signed-off-by: NMilosz Tanski <milosz@adfin.com>
[hch: rebased on top of my kiocb changes]
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NStephen Bates <stephen.bates@pmcs.com>
Tested-by: NStephen Bates <stephen.bates@pmcs.com>
Acked-by: NJeff Moyer <jmoyer@redhat.com>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>