[TYPO3-core] RFC: Fix FE user login for DBAL

[Franz Holzinger]

Hello Dmitry

>>Get yourself a copy of Oracle XE (free, but registration required) and 
>>see the madness :-) BTW, I just talked to a dev who thinks this is 
>>reasonable...
>>    
>>
>
>You know, I hate Oracle :) So if I can skip it at any occasion, I will 
>do it :)
>
>  
>
This is no problem with ORACLE but with the silly wrong comparison of
NULLs in MySQL.

Greets,

Franz