Glenn Everhart's odds 'n' ends, Fall 1997

CMPHIGHC - Compressing virtual disk; also will present HSC backup or
		back/physical savesets on tape to the system as disks.
		Also this one has some experimental code which lets
		you specify a blocking factor. This is designed for
		use where you have, e.g., a CD drive that uses blocks
		of 2048 bytes, to allow a /reblock:2048 switch to
		tell the dthost command to reblock it to 512.

CPYDSK - Simple program to copy one disk to another block-for-block.

DTHST* - The bits of CMPHIGHC that do the /reblock stuff.

SENDPACKACK - Little program to send IO$_PACKACK to a device. Asks for
		the device name,

VDD64 - Virtual disk, able to work with DEC shadowing. The erroneous
		ucb$l_maxbcnt to 8KB is removed here so it won't
		slow performance greatly on large I/Os.