Add binject IO engine

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/ioengine.h b/ioengine.h
index f6238f8..344cdbf 100644
--- a/ioengine.h
+++ b/ioengine.h
@@ -32,6 +32,9 @@
 #ifdef FIO_HAVE_SOLARISAIO
 		aio_result_t resultp;
 #endif
+#ifdef FIO_HAVE_BINJECT
+		struct b_user_cmd buc;
+#endif
 		void *mmap_data;
 	};
 	struct timeval start_time;