improve .gitignore files, fix index.html links, sync CNAME

fix experimental web site links in experimental index.html

sync CNAME with https://github.com/ioccc-src/winner/blob/master/CNAME

improve .gitignore files

Added to each .gitignore file, comments on how to sort.

Put into winner .gitignore files, ignore *.dSYM files.

Put into winner .gitignore files, ignore indent.c,
indent.o and indent files.  This is done so that the
winner directory can more self contained.

We did not put into winner .gitignore files, however,
excludes of .-files as found in the top level .gitignore file.
As .-files are not allowed by mkiocccentry, the top level
.gitignore file remains sufficient.

Added to year level .gitignore files, excludes of
mkentry or iocccsize files as needed.

Sorted (via sort -d -u) all .gitignore file.

1986/applin/.gitignore

@@ -1,3 +1,9 @@
+#
+# sort with: sort -d -u
 applin
 applin.orig
+*.dSYM
+indent
+indent.c
+indent.o
 prog.orig

1986/august/.gitignore

@@ -1,3 +1,9 @@
+#
+# sort with: sort -d -u
 august
 august.orig
+*.dSYM
+indent
+indent.c
+indent.o
 prog.orig

1986/bright/.gitignore

@@ -1,3 +1,9 @@
+#
+# sort with: sort -d -u
 bright
 bright.orig
+*.dSYM
+indent
+indent.c
+indent.o
 prog.orig

1986/hague/.gitignore

@@ -1,4 +1,10 @@
+#
+# sort with: sort -d -u
+*.dSYM
 hague
 hague.alt
 hague.orig
+indent
+indent.c
+indent.o
 prog.orig

1986/holloway/.gitignore

@@ -1,3 +1,9 @@
+#
+# sort with: sort -d -u
+*.dSYM
 holloway
 holloway.orig
+indent
+indent.c
+indent.o
 prog.orig

1986/marshall/.gitignore

@@ -1,4 +1,10 @@
+#
+# sort with: sort -d -u
+*.dSYM
+indent
+indent.c
+indent.o
 marshall
+marshall.alt
 marshall.orig
 prog.orig
-marshall.alt

1986/pawka/.gitignore

@@ -1,3 +1,9 @@
+#
+# sort with: sort -d -u
+*.dSYM
+indent
+indent.c
+indent.o
 pawka
 pawka.orig
 prog.orig

1986/stein/.gitignore

@@ -1,4 +1,10 @@
+#
+# sort with: sort -d -u
 a.out
+*.dSYM
+indent
+indent.c
+indent.o
+prog.orig
 stein
 stein.orig
-prog.orig

1986/wall/.gitignore

@@ -1,4 +1,10 @@
+#
+# sort with: sort -d -u
+*.dSYM
+indent
+indent.c
+indent.o
+prog.orig
 wall
 wall.alt
 wall.orig
-prog.orig