hi guys, i sent some patch about qc_info plugin (https://mariadb.atlassian.net/browse/MDEV-4682), via pull request at github (https://github.com/MariaDB/server/pull/6), could anyone check if it's ok?

i included test file changes

there's only one thing todo, that's include/not include statistics inside query cache, since it increase memory use, i think could be nice at runtime change this variable and include statistics on/off (more info inside mdev)

Roberto Spadim