Make `tramp-make-tramp-file-name' calls consistent.

Make `tramp-make-tramp-file-name' calls consistent.

* lisp/net/tramp.el (tramp-get-buffer)
(tramp-handle-file-name-as-directory)
(tramp-handle-file-name-directory, tramp-handle-file-remote-p)
(tramp-handle-file-truename, tramp-handle-find-backup-file-name)
(tramp-handle-insert-file-contents):
* lisp/net/tramp-gvfs.el (tramp-gvfs-handle-expand-file-name)
(tramp-gvfs-get-remote-uid, tramp-gvfs-get-remote-gid)
(tramp-gvfs-maybe-open-connection):
* lisp/net/tramp-sh.el (tramp-sh-handle-file-truename)
(tramp-sh-handle-expand-file-name, )
(tramp-sh-handle-process-file, tramp-get-remote-path):
* lisp/net/tramp-smb.el (tramp-smb-handle-expand-file-name)
(tramp-smb-handle-process-file): Make `tramp-make-tramp-file-name'
calls consistent.