should not ignore the rest of recursive constructs

* array.c (rb_ary_hash): should not ignore the rest of recursive
  constructs.
* hash.c (rb_hash_hash): ditto.
* range.c (range_hash): ditto.
* struct.c (rb_struct_hash): ditto.
* test/-ext-/test_recursion.rb (TestRecursion): separate from
  test/ruby/test_thread.rb.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43860 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-11-27

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43861 b2dd03c8-39d4-4d8f-98ff-823fe69b080e