[fpc-pascal] installing cross fpc in parallel to systems fpc

[Marco van de Voort]

In our previous episode, Marc Santhoff said:
> > fpc -Parm calls ppcarm, fpc -Px86_64 calls ppcx64.
> 
> Besides the language - fpc and lazarus are so cool tools!

and fpc  -V-1.0 calls ppc386-1.0  etc etc :-)