added routing extensions fix from http://www.portallabs.com/blog/2008/12/02/fixing-subdomain_fu-with-named-routes-rails-22/
added routing extensions fix from http://www.portallabs.com/blog/2008/12/02/fixing-subdomain_fu-with-named-routes-rails-22/

Signed-off-by: Michael Bleigh <17b9e1c64588c7fa6419b4d29dc1f4426279ba01@intridea.com>
yakovenkodenis/subdomain-fu,applicake/subdomain_fu,mbleigh/subdomain-fu,udayakiran/subdomain-fu,meraki/subdomain-fu,applicake/subdomain_fu,asok/subdomain-fu