gfio: change job option view

Instead of having a top notebook containing jobs, and subnotebooks
containing options, have just the one subnotebook and change the
viewed options by selecting the job in a combo box at the top.
This greatly reduces the number of widgets displayed for a big
number of jobs, speeding it up.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/gfio.h b/gfio.h
index 4d6d5d9..b4cef0b 100644
--- a/gfio.h
+++ b/gfio.h
@@ -153,6 +153,9 @@
 	struct end_results *results;
 	unsigned int nr_results;
 
+	uint32_t update_job_status;
+	volatile uint32_t update_job_done;
+
 	struct cmd_du_pdu *du;
 	unsigned int nr_du;
 };