title: Django template dir switching
body: <p>Does anyone know a way to switch the TEMPLATE_DIR in django dynamically.</p>
  
  <p>I need to create a set of templates for a mobile version and would like the templates to sit inside there own dir instead of inside the root template dir ie: I would like 2 template dirs 'templates' and 'mobile_templates' and not have to use 'templates/mobile' for the latter. </p>
  
  <p>Do I have to write my own template loader?</p>