title: trac authentication issue with mercurial
body: <p>I'm trying to get a Trac install working on a Centos box. I have installed Trac (v 0.12.1) and tracmercurial plugin (http://trac.edgewall.org/wiki/TracMercurial) rev #@9946.</p>
  
  <p>So far everything seems to be working fine EXCEPT when i go to the login page. I constantly get the error </p>
  
  <pre><code>"Authentication information not available." 
  </code></pre>
  
  <p>My trac project is at <strong>/home/adil/trac-projects</strong> . My mercurial repo is at <strong>/home/adil/hg/reponame</strong> . My htpasswd file is at <strong>/home/adil/hg/.htpasswd</strong>, world readable.</p>
  
  <p>I would like to use my htpasswd file to login to trac, but as soon as i step in the page i am greeted with a friendly error. I am initializing tracd like so :</p>
  
  <pre><code>sudo tracd --port 8002 --basic-auth=\"trac-projects,/home/adil/hg/.htpasswd,Private\" /home/adil/trac-projects
  </code></pre>
  
  <p>The reason i mentioned mercurial is because it seemed to work when the plugin was not installed. But i need both.</p>
  
  <p>What gives?</p>