utah read20 c.1987

Phil Budne <phil@ultimate.com>;

04-Dec-95
	Added fixes from Stu Grossman (Stanford) from July 1990
13-Feb-96
	Added -r (raw) extraction for 36-bit byte files
24-Mar-00
	Added -C (TPC tape format)
28-Nov-01
	Fixed for little endian, gcc 2.95.2, FreeBSD compilation
