fuel/core — pull request #681 by chrismeller (2011-11-21 20:59:51+00:00)
Title: Separate each piece of the WWW-Authenticate header for digest requests with a comma

This brings it into compliance with [RFC 2617](http://tools.ietf.org/html/rfc2617#page-18) and makes it work with the browsers I am testing with (Chrome and IE 9).