ruby.h: add old names
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50536 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
ruby.h: add old names
(rb_data_object_alloc): add old names for source level backward
compatibilities.
aliases for binary level backward compatibilities.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50536 b2dd03c8-39d4-4d8f-98ff-823fe69b080e