block parameter.

* eval.c (rb_yield_values): a function to yield multiple values.

* array.c (sort_1): use rb_yield_values.

* enum.c (min_ii, max_ii): ditto.

* hash.c (rb_hash_update_block_i, delete_if_i, select_i,
  each_pair_i, env_each, env_reject_bang, env_select,
  env_update_i): ditto.

* struct.c (rb_struct_each_pair): ditto.

* eval.c (top_include): should include module in the current self,
  not ruby_top_self. [ruby-dev:20198]

* eval.c (top_include): stop inclusion to ruby_wrapper; give
  warning.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e