* lib/rexml/rexml.rb: move entity_expansion_limit and entity_expansion_text_limit accessors to ... * lib/rexml/security.rb: ... here. * lib/rexml/document.rb: use REXML::Security. * lib/rexml/text.rb: use REXML::Security. * test/rexml/test_document.rb: use REXML::Security. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39528 b2dd03c8-39d4-4d8f-98ff-823fe69b080e