WCONTINUED is not portable

[Martin Husemann]

The flag WCONTINUED for waitpid() is not portable.

The attached patch just defines it to 0 if missing.

Martin
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--- gcc/lto/lto.c.orig	2014-02-24 23:58:44.000000000 +0100
+++ gcc/lto/lto.c	2014-03-21 16:43:05.000000000 +0100
@@ -2470,6 +2470,11 @@ do_stream_out (char *temp_filename, lto_
 
 /* Wait for forked process and signal errors.  */
 #ifdef HAVE_WORKING_FORK
+
+#ifndef WCONTINUED
+#define	WCONTINUED	0
+#endif
+
 static void
 wait_for_child ()
 {