19 Feb. 1992:	updated	dist.mod dist.n egypt2.dat egypt2.mod oil.mod
			train1.mod train2.dat train2.mod
		added	score1.dat struc1.dat struc6.dat struc8.dat

5 April 1993:	added m2a mps.mod mps1.mod (models for MPS data and
		an awk script, m2a, that turns MPS into suitable data).

13 Sept. 1996:	optimal.val updated.

31 May 1998:	Last line, consisting of "end;", removed from
		dist03.dat, egypt1.dat, egypt2.dat, mod8.dat, oil.dat,
		prod03.dat, prod08.dat, prod13.dat, score1.dat,
		struc1.dat, struc6.dat, struc8.dat, train1.dat,
		and train2.dat.

20 Oct. 1998:	m2a: adjusted to handle blank names in RHS, RANGES, and
		BOUNDS sections.  Variants m2ai and mpsi.mod of m2a and
		mps.mod added for MPS files with integer 'MARKER' lines.

10 Aug. 1999:	m2ai: put quotes around members of set K.
		mpsi.mod: mention m2ai rather than m2a.

11 Nov. 1999:	m2a, m2ai: fix glitches in handling FR and MI
		lines in BOUNDS sections.