Add preview of 1984-2019

The 2020 winners are hinted it, but the source code is not there,
nor are the hints. Someone could look into the HTML and
see what was commented out, but that is not a problem because
WHO won is known and the name of their AWARD is known already.
Moreover a number of the winners have talked about what their
entirs do, so the commented out spoiler text is not a bit problem.

One will find HTML commented out with:

    <!-- XXX remove when 2020 is ready
    2020 links here
    XXX remove when 2020 is ready -->

The "XXX remove when 2020 is ready" string is found at the
start and end comment blocks.  Again, soneone could read
what was commented out, but that is OK since most of that
information is known or can be known.  The following files
have such HTML comment blocks in them.

    ./winners.html
    ./years-spoiler.html
    ./years.html

In addition, ./all/summary.txt was modified to not
include the 2020 entries for the momemt.

The 2020 winner code AND write-ups are NOT part of this set.

p.s. The all/all.tar.bz2 does not contain the 2020 source code (yet?).

1998/Makefile

@@ -0,0 +1,175 @@
+#!/bin/make
+# 1998 makefile
+#
+# Copyright (c) Landon Curt Noll, Jeremy Horn, Peter Seebach
+# and Leonid A. Broukhis, 1999.
+# All Rights Reserved.  Permission for personal, educational or non-profit
+# use is granted provided this this copyright and notice are included in its
+# entirety and remains unaltered.  All other uses must receive prior permission
+# from the contest judges.
+
+SHELL=/bin/sh
+CAT=cat
+CHMOD=chmod
+CP=cp
+MV=mv
+ECHO=echo
+LN=ln
+RM=rm
+SED=sed
+TRUE=true
+
+# flags for ANSI compiles
+#
+# NOTE: Some ANSI compilers make use of -Xa to turn on ANSI mode,
+#	others such as gcc may want -ansi, others may want nothing
+#	at all.  Adjust the CFLAGS line as needed.
+#
+# NOTE: Some compilers cannot optimize, or optimize some entries
+#	incorrectly.  You might want to turn on -O to see if your
+#	compiler can handle them.
+#
+# NOTE: On some systems, the library path does not include the location
+#	of the X11 libraries.  You might need to use a -L/path/to/X11/lib/dir
+#	in order to compile with these libs.
+#
+#CFLAGS=-O -Xa
+#CFLAGS=-Xa
+CFLAGS= -ansi
+#CFLAGS= -ansi -O
+#CFLAGS=
+#CFLAGS= -ansi -L/usr/X11R6/lib
+
+# ANSI compiler
+#
+# Set CC to the name of your ANSI compiler.
+#
+# Some entries seem to need gcc.  If you have gcc, set
+# both CC and MAY_NEED_GCC to gcc.
+#
+# If you do not have gcc, set CC to the name of your ANSI compiler, and
+# set MAY_NEED_GCC to either ${CC} (and hope for the best) or to just :
+# to disable such programs.
+#
+CC= cc
+MAY_NEED_GCC= gcc
+
+# winners that compile under ANSI C
+#
+WINNERS= schweikh1 df dloweneil banks dlowe bas2 fanf bas1 tomtorfs dorssel \
+	 schweikh2 schnitzi chaos schweikh3
+ALT_NAMES= schweikh2.orig banks.orig dlowe.orig df.orig schweikh1.orig \
+	chaos_nohalf
+DATA_FILES= banks_files chaos_files fanf_files schweikh1_files schweikh3_files
+
+
+all: ${WINNERS}
+
+schweikh1: schweikh1.c
+	${MAY_NEED_GCC} ${CFLAGS} $? -o $@
+
+schweikh1.orig: schweikh1.orig.c
+	${MAY_NEED_GCC} ${CFLAGS} $? -o $@
+
+schweikh1_files: data
+
+df: df.c
+	${CC} ${CFLAGS} $? -o $@
+
+df.orig: prog.c
+	${CC} ${CFLAGS} $? -o $@
+
+prog.c : df.c
+	${RM} -f prog.c
+	${CP} $? prog.c
+
+dloweneil: dloweneil.c
+	${CC} ${CFLAGS} $? -lcurses -o $@
+
+# See note about use of -L/path/to/X11/lib/dir above this rule fails to link
+#
+banks: banks.c
+	${CC} ${CFLAGS} $? -DIT=XK_Page_Up -DDT=XK_Page_Down \
+		-DUP=XK_Up -DDN=XK_Down -DLT=XK_Left -DRT=XK_Right \
+		-DCS=XK_Return -Ddt=0.02 -lm -lX11 -o $@
+
+# See note about use of -L/path/to/X11/lib/dir above this rule fails to link
+#
+banks.orig: banks.orig.c
+	${MAY_NEED_GCC} ${CFLAGS} $? -DIT=XK_Page_Up -DDT=XK_Page_Down \
+		-DUP=XK_Up -DDN=XK_Down -DLT=XK_Left -DRT=XK_Right \
+		-DCS=XK_Return -Ddt=0.02 -lm -lX11 -o $@
+
+banks_files: bb.sc horizon.sc mountains.sc pittsburgh.sc pyramids.sc river.sc
+
+dlowe: dlowe.c
+	${CC} ${CFLAGS} $? -o $@
+
+dlowe.orig: dlowe.orig.c
+	${CC} ${CFLAGS} $? -o $@
+
+bas2: bas2.c
+	${CC} ${CFLAGS} $? -o $@
+
+fanf: fanf.c
+	${RM} -f fanftmp1.c fanftmp2.c
+	${MAY_NEED_GCC} ${CFLAGS} -E $? > fanftmp1.c
+	${MAY_NEED_GCC} ${CFLAGS} -E fanftmp1.c > fanftmp2.c
+	${MAY_NEED_GCC} ${CFLAGS} fanftmp2.c ${LDFLAGS} -o $@
+
+fanf_files: fanf.lambda
+
+bas1: bas1.c
+	${CC} ${CFLAGS} $? -o $@
+
+tomtorfs: tomtorfs.c
+	${CC} ${CFLAGS} $? -o $@
+
+dorssel: dorssel.c
+	${CC} ${CFLAGS} $? -o $@
+
+schweikh2: schweikh2.c
+	${MAY_NEED_GCC} ${CFLAGS} $? -o $@
+
+schweikh2.orig: schweikh2.orig.c
+	${MAY_NEED_GCC} ${CFLAGS} $? -o $@
+
+schweikh3: schweikh3.c
+	${MAY_NEED_GCC} ${CFLAGS} $? -DM0=sizeof -DM1=long -DM2=void \
+		-DM3=realloc -DM4=calloc -DM5=free -o $@
+
+schweikh3_files: samefile.1
+
+schnitzi: schnitzi.c
+	${CC} ${CFLAGS} $? -o $@
+
+chaos: chaos.c
+	${CC} ${CFLAGS} $? -lcurses -o $@
+
+# some libcurses do not have halfdelay().  This rule is for those systems
+#
+chaos_nohalf: chaos_nohalf.c
+	${CC} ${CFLAGS} $? -lcurses -o $@
+	${CP} -f $@ chaos
+
+chaos_nohalf.c: chaos.c
+	${RM} -f $@
+	${SED} -e 's/halfdelay([^)]*);//' < $? > $@
+
+chaos_files: cube.data desk.data ioccc.data pyramid.data xwing.data
+
+everything: ${WINNERS} ${ALT_NAMES} ${DATA_FILES}
+
+clean:
+	${RM} -f *.o a.out core ${WINNERS}
+	${RM} -f prog.c fanftmp1.c fanftmp2.c chaos_nohalf.c
+
+clobber: clean
+	${RM} -f ${WINNERS}
+	${RM} -f ${ALT_NAMES}
+
+nuke: clobber
+	@${TRUE}
+
+install: all
+	${CAT} ${WINNERS} ${ALT_NAMES} > /dev/null