debugcmd.c:execute_cmd:added skip counter which adjusts the starting position of next argument correctly thus avoiding cropping the latter quoted argument.
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
mysql_backend.c:gw_change_user: instead of setting flags directly to replybuffer, set server command to backend's protocol object and reply the message directly to backend where flags are set and it is replied back to client.
RWSplit router handles query processing errors that happened in router by sending parse error reply to client. routeQuery fails only when backend has failed.
debugcmd.c:convert_arg returned zero if argument is invalid. That zero was cast to pointer. Using it caused NULL-pointer references. Changed the return value indicating about error to 0x1 which is then handled properly.
query_classifier.cc: set_query_type lost previous query type if the new was more restrictive. Problem was that if query is both READ and SESSION_WRITE and configuration parameter use_sql_variables_in=all was set, routing target became ambiguous. Replaced call to set_query_type with simply adding new type to type (=bit field) and checking unsupported combinations in readwritesplit.c:get_route_target. If such a case is met, a detailed error is written to error log in readwritesplit.c. mysql_client.c sees the error code and sends an error to client. Then mysql_client.c calls router's handleError which ensures that there are enough backend servers so that the session can continue.
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.
readwritesplit.c:route_session_write failed if the last backend on all backends list was not in use. THe situation where not all backends are used by routing session is normal especially if max_slave_connections is not set to 100%. Thus session commands may have failed if user was bit unlucky.
Changed the logic so that the function fails (and session is closed) if routing fails to any such backend which is in use in the session.
