Font bits: create symlink in jail at OS instdir path, to point at /lo

This ensures that bundled fonts in instdir/share end up resolved to
the same path that they were in when the forkit font config was setup.

It may also help locate other pre-inited resources.

Also copy in ~/.fonts in debug mode - can't hurt.

loolwsd/LOOLKit.cpp

@@ -117,6 +117,7 @@ namespace
         switch (typeflag)
         {
         case FTW_F:
+        case FTW_SLN:
             File(newPath.parent()).createDirectories();
             if (link(fpath, newPath.toString().c_str()) == -1)
             {
@@ -155,9 +156,6 @@ namespace
         case FTW_NS:
             Log::error("nftw: stat failed for '" + std::string(fpath) + "'");
             return 1;
-        case FTW_SLN:
-            Log::error("nftw: symlink to nonexistent file: '" + std::string(fpath) + "', ignored.");
-            break;
         default:
             Log::error("nftw: unexpected type: '" + std::to_string(typeflag));
             assert(false);

loolwsd/Makefile.am

@@ -131,7 +131,7 @@ clean-local:
 	if test "z@JAILS_PATH@" != "z"; then rm -rf "@JAILS_PATH@"; fi
 	if test "z@SYSTEMPLATE_PATH@" != "z"; then rm -rf "@SYSTEMPLATE_PATH@"; fi
 
-run: @JAILS_PATH@ @SYSTEMPLATE_PATH@/system_stamp
+run: all @JAILS_PATH@ @SYSTEMPLATE_PATH@/system_stamp
 	@echo "Launching loolwsd - launch this in your browser:"
 	@cp $(abs_top_srcdir)/test/data/hello.odt $(abs_top_srcdir)/test/data/hello-world.odt
 	@PROTOCOL="http" ; if test "z@ENABLE_SSL@" != "z"; then PROTOCOL="https" ; fi ; \

loolwsd/loolwsd-systemplate-setup

@@ -88,12 +88,14 @@ if [ -h usr/share/fonts/ghostscript ]; then
 fi
 
 # Our Libreoffice install often comes with pre-bundled fonts.
-mkdir -p $CHROOT/$INSTDIR/share
-cp -r -p -L $INSTDIR/share/fonts $CHROOT/$INSTDIR/share/
+# we need to ensure that there is a link to these with the same
+# path that fontconfig found.
+mkdir -p ./lo
+mkdir -p ./$INSTDIR
+rmdir ./$INSTDIR
+ln -s /lo $CHROOT/$INSTDIR
 
-#
-# A debugging hackery to avoid confusion.
-#
+# Debugging only hackery to avoid confusion.
 if test "z$ENABLE_DEBUG" != "z" -a "z$HOME" != "z"; then
     echo "Copying development users's fonts into systemplate"
     mkdir -p $CHROOT/$HOME