Use CADH.SYS for hard kill if present on system

[Gregg Young]

From OpenXF86 in common.c ~350:

if (DosOpen
	((PSZ) "/dev/fastio$", (PHFILE) & hfd, &action, 0, FILE_SYSTEM,
	 FILE_OPEN,
	 OPEN_SHARE_DENYNONE | OPEN_FLAGS_NOINHERIT | OPEN_ACCESS_READONLY,
	 0) != 0)
	return 0;
    else
	return hfd;

For OpenCADH would become:

if (DosOpen
	((PSZ) "/DEV/CADH$$$$", (PHFILE) & hfd, &action, 0, FILE_SYSTEM,
	 FILE_OPEN,
	 OPEN_SHARE_DENYNONE | OPEN_FLAGS_NOINHERIT | OPEN_ACCESS_READONLY,
	 0) != 0)
	return 0;
    else
	return hfd;

In Death common.c ~375

if ((hfd = OpenXF86()) == 0)
	return FALSE;
    param = pid;

    if (DosDevIOCtl
	(hfd, 0x76, 0x65, (PULONG *) & param, sizeof(USHORT), &plen, NULL, 0,
	 NULL) != 0) {
	DosClose(hfd);

We would add for CADH

if ((hfd = OpenCADH()) == 0)
	return FALSE;
    param = pid;

    if (DosDevIOCtl
	(hfd, 0x80, 0x05, (PULONG *) & param, sizeof(USHORT), &plen, NULL, 0,
	 NULL) != 0) {
	DosClose(hfd);

Need to also add checks for menu items being present and usable or not. See XF86Installed common.c ~365.

[Gregg Young]

CS [136]