Add definition of MSG_WAITFORONE and MSG_CMSG_CLOEXEC

From yocto:
http://git.yoctoproject.org/cgit.cgi/poky/plain/meta/recipes-core/uclibc/uclibc-0.9.33/define-MSG_CMSG_CLOEXEC.patch

Upstream-Status: Pending

Index: git/libc/sysdeps/linux/common/bits/socket.h
===================================================================
--- git.orig/libc/sysdeps/linux/common/bits/socket.h	2012-01-26 23:23:21.537456132 -0800
+++ git/libc/sysdeps/linux/common/bits/socket.h	2012-01-26 23:25:10.125461388 -0800
@@ -235,8 +235,15 @@
 #define	MSG_ERRQUEUE	MSG_ERRQUEUE
     MSG_NOSIGNAL	= 0x4000, /* Do not generate SIGPIPE.  */
 #define	MSG_NOSIGNAL	MSG_NOSIGNAL
-    MSG_MORE		= 0x8000  /* Sender will send more.  */
+    MSG_MORE		= 0x8000,  /* Sender will send more.  */
 #define	MSG_MORE	MSG_MORE
+    MSG_WAITFORONE      = 0x10000, /* Wait for at least one packet to return.*/
+#define MSG_WAITFORONE  MSG_WAITFORONE
+
+    MSG_CMSG_CLOEXEC    = 0x40000000    /* Set close_on_exit for file
+                                           descriptor received through
+                                           SCM_RIGHTS.  */
+#define MSG_CMSG_CLOEXEC MSG_CMSG_CLOEXEC
   };