Add parser support for out-of-td option storage

Currently the parser assumes the storage is inside a thread_data
structure.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/parse.h b/parse.h
index 085de1a..95d99f5 100644
--- a/parse.h
+++ b/parse.h
@@ -41,6 +41,7 @@
 	unsigned int off2;
 	unsigned int off3;
 	unsigned int off4;
+	void *roff1, *roff2, *roff3, *roff4;
 	unsigned int maxval;		/* max and min value */
 	int minval;
 	int neg;			/* negate value stored */