Rails3: model: user: use ::Query instead of Query
Test fails on Rails 3.0.
<pre> Error: test_destroy_should_update_wiki_contents(UserTest): NoMethodError: undefined method `delete_all' for ActiveRecord::AttributeMethods::Query:Module app/models/user.rb:602:in `remove_references_before_destroy' test/unit/user_test.rb:298:in `test_destroy_should_update_wiki_contents' </pre>
Authored by: tmaruyama 2011-12-09
Parent: [r8139]
Child: [r8141]
