wait: move fallback definitions of wait options to xlat/

* wait.c: Move definitions of __W* flags ...
* xlat/wait4_options.in: ... here.

wait.c

@@ -2,16 +2,6 @@
 
 #include <sys/wait.h>
 
-#ifndef __WNOTHREAD
-# define __WNOTHREAD	0x20000000
-#endif
-#ifndef __WALL
-# define __WALL		0x40000000
-#endif
-#ifndef __WCLONE
-# define __WCLONE	0x80000000
-#endif
-
 #include "xlat/wait4_options.h"
 
 #if !defined WCOREFLAG && defined WCOREFLG

xlat/wait4_options.in

@@ -7,6 +7,6 @@ WTRAPPED
 WSTOPPED
 WCONTINUED
 WNOWAIT
-__WCLONE
-__WALL
-__WNOTHREAD
+__WCLONE 0x80000000
+__WALL 0x40000000
+__WNOTHREAD 0x20000000