Add option to skip delays when replaying traces

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/fio.h b/fio.h
index 5788107..ad47762 100644
--- a/fio.h
+++ b/fio.h
@@ -254,6 +254,7 @@
 	unsigned int gtod_cpu;
 	unsigned int gtod_offload;
 	enum fio_cs clocksource;
+	unsigned int no_stall;
 
 	char *read_iolog_file;
 	char *write_iolog_file;