FSF preferences (format definitions, nee threecol.tex, and
default font defs, nee rc-cm.tex, now both directly in this file).
lpsrc.sed, psrc.sed: alternate font defs, now sed scripts to modify refcard.tex
Makefile.in: use sed -f psrc.sed to produce refcard.ps target; new
target lrefcard.ps for sites using long PS font names
Removed old auxiliary TeX files, no longer necessary with this scheme.
