The plugabble auth system has been tested and it's implemented in rhodecode-pam bookmark
Many thanks for the implementation.
When I try to see the changes, I get 'The branch 'rhodecode-pam' does not exist.', despite it is shown in the source browser.
It's been merged back to beta branch, please use it for the pluggable auth, but i would consider waiting for 2.0.0 release this week there has been more work done there regarding the plugabble auth systems