Log Message:
Update ruby-activesupport to 1.4.4.

Changes:
* Backport: allow array and hash query parameters. Array route parameters are
  converted/to/a/path as before.
* Demote Hash#to_xml to use XmlSimple#xml_in_string so it can't read files or
  stdin.
* Document Object#blank?.
* Update Dependencies to ignore constants inherited from ancestors.
* Improved multibyte performance by relying less on exception raising