abort might not flush all open streams before process termination

	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/abort-1.c: Print to stderr.
	* testsuite/libgomp.oacc-c-c++-common/abort-3.c: Likewise.

From-SVN: r229382

libgomp/ChangeLog

 2015-10-26  Thomas Schwinge  <thomas@codesourcery.com>
 
+	* testsuite/libgomp.oacc-c-c++-common/abort-1.c: Print to stderr.
+	* testsuite/libgomp.oacc-c-c++-common/abort-3.c: Likewise.
+
 	* testsuite/libgomp.oacc-c-c++-common/lib-1.c: Remove explicit
 	acc_device_nvidia usage.
 	* testsuite/libgomp.oacc-c-c++-common/lib-10.c: Likewise.

libgomp/testsuite/libgomp.oacc-c-c++-common/abort-1.c

 /* { dg-do run } */
 
+#include <stdio.h>
 #include <stdlib.h>
 
 int
 main (void)
 {
-  __builtin_printf ("CheCKpOInT\n");
+  fprintf (stderr, "CheCKpOInT\n");
 #pragma acc parallel
   {
     abort ();

libgomp/testsuite/libgomp.oacc-c-c++-common/abort-3.c

 /* { dg-do run } */
 
+#include <stdio.h>
 #include <stdlib.h>
 
 int
 main (void)
 {
-  __builtin_printf ("CheCKpOInT\n");
+  fprintf (stderr, "CheCKpOInT\n");
 #pragma acc kernels
   {
     abort ();