 * Program DEPAR does the following:
 *	sets parity to one of
 *		even (-e and in -t)
 *		odd (-o)
 *		null (default and in -u)
 *		full (-s and in -8)
 *		ignored (-i);
 *	removes null characters unless asked (-0; cleared by -u, -t, -8);
 *	if asked,
 *		changes cr-lf's to lf's (-r and in -u)
 *			or vice-versa (-c and in -t, -8)
 *		changes lower-case to upper-case (-\u and in -t, -8)
 *			or vice-versa (-l and in -u)
 *	    default being no change in either;
 *	has special flags for UNIX, pdp-8, and PDP-10 modes (-u,-8,-t);
 *	and one has a choice of temp-file in current directory (-h)
 *		or in file's directory (default),
 *		useful in certain esoteric cases.
 *
 *	written by joseph s. d. yao
 *
 *	last modified 11 march 1976
 *
