DIOS Mods:
    vdu's and sin's may have an optional dios entry,
    in which case there must be one dios entry for
    each device.  an entry of 0 means that the device
    does no work through the dios.

    mkconf generates an array of dios addresses for the
    device, like
	    char    sindios[] = {
		    0x00, 0x80, 0x80, 0x80, 0x80,
	    };
    which the driver can use to determine if it should
    work with the dios.   If no dios is specified but
    the device could take a dios spec, then an array
    of zeroes is generated.  Example, a vdu entry with
    no dios specified would generate
    char    vdudios[] = {
	    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	    0x00,
    };

    mkconf now insists that dios and associated device addresses
    conform to the addressing constraints of dioses.

Param mods:
    No longer generates proc[NPROC], etc.
    those are taken care of in para.c
    Next, mkconf should generate para.c from a conf file