py: Make globals and locals proper dictionary objects.
Finishes addressing issue #424.
In the end this was a very neat refactor that now makes things a lot
more consistent across the py code base. It allowed some
simplifications in certain places, now that everything is a dict object.
Also converted builtins tables to dictionaries. This will be useful
when we need to turn builtins into a proper module.
diff --git a/unix/mpconfigport.h b/unix/mpconfigport.h
index b8ee020..3798f88 100644
--- a/unix/mpconfigport.h
+++ b/unix/mpconfigport.h
@@ -34,4 +34,4 @@
struct _mp_obj_fun_native_t;
extern const struct _mp_obj_fun_native_t mp_builtin_open_obj;
#define MICROPY_EXTRA_BUILTINS \
- { MP_QSTR_open, (mp_obj_t)&mp_builtin_open_obj },
+ { MP_OBJ_NEW_QSTR(MP_QSTR_open), (mp_obj_t)&mp_builtin_open_obj },