Otherwise crtools built with stack executable, in result
kernel sets up

	current->personality |= READ_IMPLIES_EXEC;

when our crtools get loaded into memory and mmap
calls in restorer create VMAs with EXEC bit set.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>