Debugging hints for sql plugin

[Jack Ostroff]

I decided to test the sql back end, but when I try to save as a mysql  
database, I get an exception thrown that opening the database failed.   
So, I'm debugging in kmymoney/plugins/sql/mymoneystoragesql_p.h.  I've  
added some debugging output in createDatabase, and found something that  
doesn't make sense to me.

After the maindb.open() fails (around line 2044,) I confirmed that  
among other values, that maindb.userName is "jack" as it should be.   
However, retrieving maindb.lastError.text(), I get "Access denied for  
user ''@'localhost' to database 'mysql' QMYSQL: Unable to connect".    
localhost is correct, as is the blank password, but where is the  
userName?  I'm going to start digging into the code for  
QSqlDatabase.open() but thought I'd ask first if anyone can think of  
something I might be doing wrong.  Just to confirm, I can run mysql at  
command line, and the database does open, so I know the db system  
(mariadb) is running, and I do have permissions to login.

Jack