[fpc-pascal] Initial support for Custom Attributes

[Dennis]

Sven Barth via fpc-pascal wrote:
> Hello together!
>
> Today FPC has finally gained initial support for Custom Attributes. 
> The work had initially been done by Joost van der Sluis almost 6 years 
> ago and Svetozar Belic had adjusted the code for trunk. So thank you 
> both for that work even if it took quite some time until it was 
> finally integrated into trunk.
>
Thanks for the contribution.

Dennis