create-directory* returns #t if the directory already exists
Auto-normalizing directory paths in tar-create to have a / suffix.
Adding assoc-get-list analog of conf-get-list.
Making assoc-get[-list] permissively ignore of non-pair entries.
Updating conf-specialize with the new record type.
Adding uri-has-scheme? utility.
Reversing logic of uri-has-scheme?.