Update library/extensions/comments-extensions.php

Changed type="text" to type="email" for the email input.
Changed type="text" to type="url" for the web address.
These HTML5 attributes are 100% backwards compatible and revert to type="text" for older browsers which ignore these input types.
Some info on the types here: http://diveintohtml5.info/forms.html
Fixes for thematic_validate_opt()

Fixed: Typo in namespacing of function props josephting
Fixed: Passing validation variable to child theme override
Cleaned Up: thematic_category_archives()

Remove deprecated parameter optioncount from wp_list_categories() props
scottnix
Fix: thematic_content() notice for undefined variable $post

Assign a value to $posts when $thematic_content_length == 'none'

props scottnix
Merge pull request #18 from coliff/patch-1

Update library/extensions/comments-extensions.php