Move getrusage() out of thread_stat

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/fio.h b/fio.h
index 12b3e3d..d540645 100644
--- a/fio.h
+++ b/fio.h
@@ -192,8 +192,6 @@
 	/*
 	 * fio system usage accounting
 	 */
-	struct rusage ru_start;
-	struct rusage ru_end;
 	uint64_t usr_time;
 	uint64_t sys_time;
 	uint64_t ctx;
@@ -432,6 +430,9 @@
 	uint64_t stat_io_bytes[2];
 	struct timeval stat_sample_time[2];
 
+	struct rusage ru_start;
+	struct rusage ru_end;
+
 	struct fio_file **files;
 	unsigned int files_size;
 	unsigned int files_index;