Log Message:
Update ruby-gettext to 1.92.0.

Notes:
 * Fixed a memory leak(again)
 * Fixed bugs.
 * Improve to support mo-files.
    * Support revision 1 of mo-file format.
    * Freeze msgstrs.
 * msgctxt - pgettext(msgctxt, msgid) support
    (eg)
    p_("File", "Open")  #=> "Open" is shown in \ 
English.
 * Update translations
   * Catalan, Chinese(Simplified), Chinese(Traditional), (English), Esperanto, \ 
German, 
     Greek, Hungarian, Latvian, Japanese, Norwegian, Portuguese(pt_BR), Russian, \ 
Serbian, 
     Spanish, Ukrainian, Vietnamese,  
 * Rails Support
    * Support rubyonrails-2.1.0 (2.0.0 or later).
       * Add new validations for activerecord-2.1.0.
         (:greater_than, :greater_than_or_equal_to, :equal_to, 
          :less_than, :less_than_or_equal_to,:odd, :even)
       * validates_(format|inclusion)_of accepts %{val} as the value
          (eg) 
           validates_inclusion_of :name, :in => %w(a, b), :message => \ 
N_("%{fn} can't be %{val}")
       * Work Fragment caching on rails-2.1.0.
       * Support ActiveRecord::Base.abstract_class.
       * Work ActiveRecord::Errors#[]
       * Work render_partial.