Get all 1986 entries to compile

1986/wall will not compile under the default gcc (as it's actually
clang) with macOS as it requires -traditional-cpp which unfortunately
clang does not support.

Also fixed many of the README.md files.

Removed 1986/bright/bright.orig.c (probably because it won't compile on
modern systems but maybe not; I did that change a while back but didn't
finish working on 1986 until just now).

1986/hague/Makefile

@@ -184,12 +184,10 @@ all: ${DATA} ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
+	@echo "NOTE: this entry uses gets() so you might get a warning about this"
+	@echo "      when compiling and running this program with some systems."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
-# alternative executable
-#
-alt: ${DATA} ${ALT_TARGET}
-	@${TRUE}
 
 # data files
 #

1986/hague/README.md

@@ -9,9 +9,15 @@ UK
 
         make all
 
-### To run
+
+NOTE: this entry uses gets() so you might get a warning about this when
+compiling and running this program with some systems.
+
+### Try:
 
 	./hague
+	[enter some text]
+
 
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