Add thread program mention of errno thread-safety.

src/tools/thread/thread_test.c

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *	$PostgreSQL: pgsql/src/tools/thread/thread_test.c,v 1.15 2004/04/05 14:13:45 momjian Exp $
+ *	$PostgreSQL: pgsql/src/tools/thread/thread_test.c,v 1.16 2004/04/06 13:55:17 momjian Exp $
  *
  *	This program tests to see if your standard libc functions use
  *	pthread_setspecific()/pthread_getspecific() to be thread-safe.
@@ -85,6 +85,8 @@ defines to your template/$port file before compiling this program.\n\n"
 	while (thread1_done == 0 || thread2_done == 0)
 		sched_yield();	/* if this is a portability problem, remove it */
 
+	fprintf(stderr, "errno is thread-safe\n\n");
+	
 	printf("Add this to your template/$port file:\n\n");
 
 	if (strerror_p1 != strerror_p2)