Log Message:
Update ruby-activerecord3 package to 3.0.7.

*Rails 3.0.7 (April 18, 2011)*

* Destroying records via nested attributes works independent of reject_if LH \ 
#6006 [Durran Jordan]

* Delegate any? and many? to Model.scoped for consistency [Andrew White]

* Quote the ORDER BY clause in batched finds - fixes #6620 [Andrew White]

* Change exists? so records are not instantiated - fixes #6127. This prevents \ 
after_find
  and after_initialize callbacks being triggered when checking for record existence.
  [Andrew White]

* Fix performance bug with attribute accessors which only occurred on Ruby \ 
1.8.7, and ensure we
  cache type-casted values when the column returned from the db contains \ 
non-standard chars.
  [Jon Leighton]

* Fix a performance regression introduced here \ 
86acbf1cc050c8fa8c74a10c735e467fb6fd7df8
  related to read_attribute method [Stian Gryt©Ìyr]