Note process vs thread in output

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fio.h b/fio.h
index b085cd1..a60be10 100644
--- a/fio.h
+++ b/fio.h
@@ -507,6 +507,7 @@
 
 extern int exitall_on_terminate;
 extern int thread_number;
+extern int nr_process, nr_thread;
 extern int shm_id;
 extern int groupid;
 extern int terse_output;