[lazarus] circular unit references

[Marco van de Voort]

> I need to use one unit from another but some definitions are in the first unit 
> For example 
> i have fibquery unit and uses fibblob and inside the fibblob i have references to fibquery 
> the compiler gives me an error ( circular unit references ) 

- try to move one of both USES statements from interface to implementation if possible.
- Move some disputed parts to a third unit.