backward.h: move deprecated declaration

* include/ruby/backward.h (rb_autoload): move declaration of
  deprecated function.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57675 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

include/ruby/backward.h

@@ -20,6 +20,9 @@ DECLARE_DEPRECATED_FEATURE(2.2, rb_hash_ifnone);
 DECLARE_DEPRECATED_FEATURE(2.2, rb_str_associate);
 DECLARE_DEPRECATED_FEATURE(2.2, rb_str_associated);
 
+/* variable.c */
+DEPRECATED(void rb_autoload(VALUE, ID, const char*));
+
 /* vm.c */
 DECLARE_DEPRECATED_FEATURE(2.2, rb_clear_cache);
 DECLARE_DEPRECATED_FEATURE(2.2, rb_frame_pop);

include/ruby/intern.h

@@ -902,7 +902,6 @@ VALUE rb_path_to_class(VALUE);
 VALUE rb_path2class(const char*);
 void rb_name_class(VALUE, ID);
 VALUE rb_class_name(VALUE);
-DEPRECATED(void rb_autoload(VALUE, ID, const char*));
 VALUE rb_autoload_load(VALUE, ID);
 VALUE rb_autoload_p(VALUE, ID);
 VALUE rb_f_trace_var(int, const VALUE*);