[fpc-pascal] Errors compiling fixes_2.6 on win64: forgot to include dblib for mssqlconn?

[Marco van de Voort]

In our previous episode, Jonas Maebe said:
> > It is hard because 2.6.x uses a different makefile system compared to trunk,
> > which is harder to tune for specific OSes.
> 
> Now it is broken for Darwin ("fpc-2.2" = fixes branch in this context):

Fixed I hope.