Log Message:
Update ruby-arel package to 2.0.9.  Latest release is 2.1.0 but it rails
related pacakge dosen't allow 2.1.0 (need to be checked).

== 2.0.9  / 2010/02/25

* Bug Fixes

  * Custom LOCK strings are allowed. Fixes LH # 6399
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https://rails.lighthouseapp.com/projects/8994/tickets/6399-allow-database-specific-locking-clauses-to-be-used

  * Strings passed to StringManager#on will be automatically tagged as SQL
    literals. Fixes Rails LH #6384
    \ 
https://rails.lighthouseapp.com/projects/8994/tickets/6384-activerecord-303-and-3-0-stable-generate-invalid-sql-for-has_many-through-association-with-conditions