Papilio pro

Hello samawati,

I ported your J1 simulator to Unix and also made your J1 eForth run on an FPGA J1 on a Papilio Pro board
with a serial line connection at 115200 Bits/s. 

Please review my changes. Maybe you want to merge my pull request.

Regards,
                Ulrich Hoffmann (uho@xlerb.de)