Fix Issue 2139 (large parts of Medley tree not showing up in files.interlisp.org) and more improvements to files.interlisp.org (#2156)

Here is what this PR does:

Fix Issue 2139: (MAKE-INDEX-HTMLS) was not handling pseudohosts correctly and an errant LI pseudohost was causing MAKE-INDEX-HTMLS to terminate early. Adjusted MAKE-INDEX-HTML so it uses psuedohosts only for the top level directory and everything further down in the tree uses the truenames relative to the top-level pseudohost, Results in a MAKE-INDEX-HTMLS run that works in the presence of random pseudohosts and in a collection of index.html files without difficult to understand and out of context references to pseudohosts.

Remove loadups/build directory from all HCFILES runs (on desktop and via github actions)

Added maiko source code and removed maiko lde executables from HCFILES outputs for github actions - thus adding maiko code and removing maiki executables @ files.interlisp.org.

Fixed scripts/clean_hcfiles.sh so that it actually cleans off all of the index.html files - was missing some.

.github/workflow directory was being left out of HCFILES. Put it back it.

scripts/clean_hcfiles.sh

@@ -23,8 +23,8 @@ main() {
 
     cat >"${shellfile}" <<-'EOF'
 	#!/bin/sh
-	git status --porcelain "$1" | grep --quiet --no-messages "??"
-	if [ $? -eq 0 ]
+	x=$(git ls-files "$1" 2>/dev/null)
+	if [ -z "$x" ]
 	then
 	rm -f "$1"
 	rm -f "$1".~*~

scripts/do_hcfiles.sh

@@ -38,6 +38,13 @@ main() {
 	"
 	EOF
 
+        # Make sure loadups/build is not included in HCFILES
+        if [ -d "${MEDLEYDIR}/loadups/build" ]
+        then
+          touch "${MEDLEYDIR}/loadups/build/.skip"
+        fi
+
+
         /bin/sh "${MEDLEYDIR}/scripts/medley/medley.command"     \
              --config -                                          \
              --id hcfiles_+                                      \