rails/rails — pull request #6522 by lest (2012-05-28 20:45:48+00:00)
Title: ActiveSupport require and dependencies

Commits:

- remove unnecessary require

AS::Multibyte are no longer required by access and filters string
core extensions.

- make AS::Multibyte::Chars work w/o multibyte core ext

Use ActiveSupport::Multibyte::Chars.new instead of String#mb_chars.
It allows to use ActiveSupport::Multibyte::Chars without requiring
String multibyte core extension.