Log Message:
Update databases/ruby-sequel package to 3.26.0.

=== 3.26.0 (2011-08-01)

* Fix bug in default connection pool if a disconnect error is raised and the
  disconnection_proc also raises an error (jeremyevans)
* Disallow eager loading via eager of many_*_many associations with
  :eager_graph option (jeremyevans)
* Major speedup in dataset creation (jeremyevans)
* Replace internal implementation of eager_graph with much faster version
  (jeremyevans)
* Don't treat strings with leading zeros as octal format in the default
  typecasting (jeremyevans)
* Fix literalization of Date, Time, and DateTime values on Microsoft Access
  (jeremyevans)
* Fix handling of nil values with the pure-Java version of nokogiri in the
  xml_serializer plugin (jeremyevans)
* Make identity_map plugin work with standard eager loading of many_to_many
  and many_through_many associations (jeremyevans)
* Make create_table! only attempt to drop the table if it already exists
  (jeremyevans)
* Remove custom table_exists? implementations in the oracle and postgres
  adapters (jeremyevans)
* Handle another type of disconnection in the postgres adapter (jeremyevans)
* Handle disconnections in the ado adapter and do postgres subadapter
  (jeremyevans)
* Recognize disconnections when issuing BEGIN/ROLLBACK/COMMIT statements
  (jeremyevans) (#368)

=== 3.25.0 (2011-07-01)

* Work with tiny_tds-0.4.5 in the tinytds adapter, older versions are no
  longer supported (jeremyevans)
* Make association_pks plugin typecast provided values to integer if the
  primary key column type is integer (jeremyevans)
* Model.set_dataset now accepts Identifier, QualifiedIdentifier, and
  AliasedExpression arguments (jeremyevans)
* Fix handling of nil values in bound variables and prepared statement and
  stored procedure arguments in the jdbc adapter (jeremyevans, wei)
* Allow treating Datasets as Expressions, e.g. DB[:table1].select(:column1)
  > DB[:table2].select(:column2) (jeremyevans)
* No longer use CASCADE by default when dropping tables on PostgreSQL
  (jeremyevans)
* Support :cascade option to #drop_table, #drop_view, #drop_column, and
  #drop_constraint for using CASCADE (jeremyevans)
* If validation error messages are LiteralStrings, don't add the column name
  to them in Errors#full_messages (jeremyevans)
* Fix bug loading plugins on 1.9 where ::ClassMethods, ::InstanceMethods, or
  ::DatasetMethods is defined (jeremyevans)
* Add Dataset#exclude_where and Dataset#exclude_having methods, so you can
  force use of having or where clause (jeremyevans)
* Allow Dataset#select_all to take table name arguments and select all
  columns from each given table (jeremyevans)
* Add Dataset#select_group method, for selecting and grouping on the same
  columns (jeremyevans)
* Allow Dataset#group and Dataset#group_and_count to accept a virtual row
  block (jeremyevans)