Addition of module_feedback_send.
Every 30 second data is sent to 127.0.0.1
Missing routines for configuration parameters and blocking the send
after successful completion
readwritesplit.c:get_route_target routed query to slave although query type was combined QUERY_TYPE_READ | QUERY_TYPE_MASTER_READ, where the latter is supposed to be routed to master.
client/test/maxadmin_test.sh: added new cases for testing maxadmin
service.c:dListListeners:fixed NULL-pointer reference
debugcli.h: replaced magic number 80 with constant integer.
cli.c:execute:fixed command buffer overflow
debugcmd.c:convert_arg:restored return value to 0 in case of error
When no users are loaded from backends, instead of counting it as a failure the service is started and the next time a client connects an attempt to load the users from the backends is made.
service.h:Added the 'serviceStartFailed' function which tries to start services with successfully started routers but no successfully started listeners.
mysql_mon.c:Added a call to ServiceStartFailed when servers come available.
Added server references to services instead of using a raw pointers to server instances.
Changed all references to service->database to service->dbref.
dcb.c:dcb_hashtable_stats:division by zero
hashtable.c:hashtable_get_stats: NULL-pointer reference
service.c:serviceStartPort:set service->users NULL to avoid referring to freed memory
users.c:dcb_usersPrintf: NULL-pointer reference
debugcmd.c:convert_arg: changed return value to 1 in case of error, 0 (==NULL) is valid but it indicates that there are no users loaded.
execute_cmd: fixed command handling
dbusers.c: Added function for setting read, write and connection timeout values. Set default timeouts for getUsers. Defaults are listed in service.c
gateway.c:shutdown_server is called whenever MaxScale is to be shut down. Added call for service_shutdown to shutdown_server.
service.c:service_alloc: replaced malloc with calloc and removed unnecessary zero/NULL initialization statements as a consequence.
serviceStart: Exit serviceStartPort loop if shutdown flag is set for the service.
serviceStartAll: Exit serviceStart loop if shutdown flag is set for the service.
service.c: Added service_shutdown which sets shutdown flag for each service found in allServices list.
service.h: Added prototype for service_shutdown
