bugzillaId-671: wrong message if SHOW DATABASES privilege is missing

This is imported from bugzilla item: http://bugs.mariadb.com/show_bug.cgi?id=671

Description Kolbe Kegel 2014-12-30 22:35:45 UTC
If the SHOW DATABASES privilege is missing for the user MaxScale tries to use to get authentication information, this message is written to the MaxScale error log:

Dec 30 14:30:07 max1 MaxScale[19360]: RW Split Router: Unable to load database grant information, MaxScale authentication will proceed without including database permissions. To correct this GRANT select permission on msql.db to the user maxuser.

a) This message mis-spells "mysql" as "msql".
b) This message should refer to the SHOW DATABASES privilege instead of to SELECT on mysql.db.