* lisp/net/tramp-gvfs.el (tramp-gvfs-handle-expand-file-name)
(tramp-gvfs-get-file-attributes)
(tramp-gvfs-maybe-open-connection): Handle davs? properly.
(tramp-gvfs-handler-askquestion): Improve `yes-or-no-p' prompt.
Show question also in batch mode. Cache result.
* test/lisp/net/tramp-tests.el (tramp-test24-file-name-completion):
Support completion for host names and ports.