While debugging udev > 170 failure on Debian Wheezy
(http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648325), it appears
that the issue was in fact due to missing accept4() in ia64.

This patch simply adds accept4() to ia64.
Signed-off-by: NÉmeric Maschino <emeric.maschino@gmail.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>