Feature #4796: Rails 3 support

@masahirotaguchi Ruby1.9xRedmine1.4は、体感でも応答が良い気がしています。今後改善されるでしょうけれど、このあたりRedmine本家のチケットにグラフが出ていて面白かったです。http://t.co/xMCJWhz2 #RxTstudy

1) Error: test_index_with_short_filters(IssuesControllerTest): RuntimeError: can't modify frozen string /var/lib/hudson/jobs/trunk-1.9.2-sqlite3/workspace/app/controllers/application_controller.rb:58:in `force_encoding' /var/lib/hudson/jobs/trunk-1.9.2-sqlite3/workspace/app/controllers/application_controller.rb:58:in `utf8nize!' /var/lib/hudson/jobs/trunk-1.9.2-sqlite3/workspace/app/controllers/application_controller.rb:60:in `block in utf8nize!' /var/lib/hudson/jobs/trunk-1.9.2-sqlite3/workspace/app/controllers/application_controller.rb:60:in `each' /var/lib/hudson/jobs/trunk-1.9.2-sqlite3/workspace/app/controllers/application_controller.rb:60:in `utf8nize!' /var/lib/hudson/jobs/trunk-1.9.2-sqlite3/workspace/app/controllers/application_controller.rb:52:in `params_filter' /var/lib/hudson/ruby1.9.2/lib/ruby/gems/1.9.1/gems/activesupport-2.3.14/lib/active_support/callbacks.r...

Full article: http://www.redmine.org/issues/4796%E3%80%80