fachat/XD2031 — pull request #7 by nils-eilers (2012-10-07 12:42:36+00:00)
Title: Fixed: IEC broke petSD compilation

Makefile always includes iec.c no matter if the device has an IEC bus.
iec.c wants to include /iechw.h that might not be there --
compilation stops.

Added #ifdef HAS_IEC / #ifdef HAS_IEEE to switch iec.c / ieee.c off if
not needed.