repack structs

Repack rb_thread_struct, rb_execution_context_struct, args_info and
iseq_compile_data to save 1 word per struct.

re_pattern_buffer remains unpacked due to the possible binary
compatibility.

[Fix GH-1907]

Based on the patch

From: Lourens Naudé <lourens@bearmetal.eu>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64096 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/vm_args.c b/vm_args.c
index 0c7db1cb9d..ef5193b77f 100644
--- a/vm_args.c
+++ b/vm_args.c
@@ -19,10 +19,10 @@ struct args_info {
     /* basic args info */
     VALUE *argv;
     int argc;
-    const struct rb_call_info_kw_arg *kw_arg;
 
     /* additional args info */
     int rest_index;
+    const struct rb_call_info_kw_arg *kw_arg;
     VALUE *kw_argv;
     VALUE rest;
 };