POSIX specifies the new WCONTINUED flag for waitpid, not just for waitid.
I overlooked this addition when I implemented waitid.  The real work was
already done to support waitid, but waitpid needs to report the results
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>