1.50 [KK 2007-07-08]
     - Back end states can be initially set using the "state"
       directive. Command "crossroads tell" now requires keyword
       "state" for setting the state.
     - Introduced actual_server and actual_port in SHM block for back
       end addresses. Introduced define FQDN_LENGTH. Back end addresses
       can be set using "crossroads tell".
     - Web front end crossroads-mgr can now redefine a back end address.