* lib/rss/rss.rb: improved type conversion.
* lib/rss/1.0.rb: ditto.
* lib/rss/0.9.rb: ditto.
* lib/rss/2.0.rb: ditto.
* lib/rss/image.rb: ditto.
* lib/rss/syndication.rb: ditto.

* test/rss/test_2.0.rb: added type conversion tests.
* test/rss/test_accessor.rb: ditto.
* test/rss/test_to_s.rb: ditto.
* test/rss/test_syndication.rb: ditto.
* test/rss/test_setup_maker_2.0.rb: ditto.
* test/rss/test_setup_maker_1.0.rb: ditto.
* test/rss/test_setup_maker_0.9.rb: ditto.
* test/rss/test_maker_sy.rb: ditto.
* test/rss/test_maker_image.rb: ditto.
* test/rss/test_maker_2.0.rb: ditto.
* test/rss/test_maker_0.9.rb: ditto.
* test/rss/test_image.rb: ditto.

* test/rss/test_maker_1.0.rb: use assert instead of assert_equal.

* test/rss/rss-assertions.rb: improved type conversion assertions.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10298 b2dd03c8-39d4-4d8f-98ff-823fe69b080e