TS-2534 Make sure RecRecord structs are always properly initialized
TS-2517 First implementation of traffic_shell.pl, and reorg the modules a bit
TS-2517 Cleanup of AdminClient.pm

This will

     - Refactor the reader, and fix the timeout (it's in seconds, sigh)
     - Better handling of finding the socket
     - Updated the docs
     - Add a new get_config() method (which is the same as get_stat()
TS-2483 Add a new metric, proxy.node.restarts.proxy.cache_ready_time
Updated CHANGES for TS-2483, TS-2517 and TS-2534