Log Message:
Update ruby-activesupport to 2.1.1.

Changes:

* Fix Ruby's Time marshaling bug in pre-1.9 versions of Ruby: utc
  instances are now correctly unmarshaled with a utc zone instead of
  the system local zone [#900 state:resolved]:activesupport/CHANGELOG

* TimeWithZone: when crossing DST boundary, treat Durations of days,
  months or years as variable-length, and all other values as absolute
  length. A time + 24.hours will advance exactly 24 hours, but a time
  + 1.day will advance 23-25 hours, depending on the day. Ensure
  consistent behavior across all advancing methods [Geoff Buesing]

* Fix TimeWithZone unmarshaling: coerce unmarshaled Time instances to
  utc, because Ruby's marshaling of Time instances doesn't respect the
  zone [Geoff Buesing]

* Added StringQuestioneer for doing things like
  StringQuestioneer.new("productio n").production? # => true and
  StringQuestioneer.new("production").development? # => false [DHH]

* Fixed Date#end_of_quarter to not blow up on May 31st [#289
  state:resolved] (Danger)