[OGo-GNUstep-Port] postgresql adapter exception while entering a project

[Sebastian Reitenbach]

Hi Helge,

> 
> I've committed a change. GDL calls -expressionValueInContext: to  
> retrieve the textual SQL representation of an object. Per default  
> (NSObject category) this calls either -stringValue or -description on  
> the object.
> 
> I've added a gstep-base specific category which checks for NSBoolNumber.

Thanks a lot, I'll test when the new nightly packages are built and 
available. 

Sebastian