Make conf_hide_path more flexible, and note a limitation in sitemap dirfilter handling.

bin/wercconf.rc

@@ -8,5 +8,5 @@ fn conf_perm_redirect {
 
 fn conf_hide_paths {
     for(i in $*)
-       dirfilter=$dirfilter^'/^'$i'$/d; '
+       dirfilter=$dirfilter^'/'^`{echo $i|sed 's!/!\\/!g'}^'/d; '
 }

lib/sitemap.tpl

@@ -9,6 +9,7 @@ fn getMdDesc {
     sed 's/^(.......................................................................................................[^ ]*).*$/\1/g; 1q' < $1 
 }
 
+# XXX Instead of recursion should use du(1) or similar.
 fn listDir {
     d=$1
     if(~ $#d 0)