Lots of cleanup changes all over to fix the constness of strings [again]. Some cleanups in config.c to remove old stuff.
First part of Sound module re-do, also moves SSI and GUS to soundcard list. Updated SSI to be configurable. Cleaned up ReSID interface.
Re-worked the "win_settings" code module, updated Ports dialog. Re-worked the "hdc.c" code, no more hdc_name. Needed later.