Instiki 0.16.5

Update to Rails 2.3.2 (the stable Rails 2.3 release).
Add audio/speex support
Update CHANGELOG
Bump version number

vendor/rails/railties/environments/boot.rb

@@ -44,6 +44,7 @@ module Rails
     def load_initializer
       require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
       Rails::Initializer.run(:install_gem_spec_stubs)
+      Rails::GemDependency.add_frozen_gem_path
     end
   end