Importing ruby-activemodel32 version 3.2.2.

Importing ruby-activemodel32 version 3.2.2.

## Rails 3.2.1 (January 26, 2012) ##

*   No changes.

## Rails 3.2.0 (January 20, 2012) ##

*   Deprecated `define_attr_method` in `ActiveModel::AttributeMethods`, because this only existed to
    support methods like `set_table_name` in Active Record, which are themselves being deprecated. *Jon Leighton*

*   Add ActiveModel::Errors#added? to check if a specific error has been added *Martin Svalin*

*   Add ability to define strict validation(with :strict => true option) that always raises exception when fails *Bogdan Gusiev*

*   Deprecate "Model.model_name.partial_path" in favor of "model.to_partial_path" *Grant Hutchins, Peter Jaros*

*   Provide mass_assignment_sanitizer as an easy API to replace the sanitizer behavior. Also support both :logger (default) and :strict sanitizer behavior *Bogdan Gusiev*