* include/ruby/ruby.h (struct RHash): no longer. [Feature #9889]

	* include/ruby/ruby.h (RHASH): ditto.

	* include/ruby/ruby.h (RHASH_ITER_LEV): deprecated.  Will be deleted later.

	* include/ruby/ruby.h (RHASH_IFNONE): ditto.

	* internal.h (struct RHash): moved here.

	* internal.h (RHASH): ditto.

	* hash.c (rb_hash_iter_lev): do not use this.

	* hash.c (rb_hash_ifnone): ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46507 b2dd03c8-39d4-4d8f-98ff-823fe69b080e