* net/tramp-compat.el (tramp-compat-user-error): New defun.

* net/tramp-compat.el (tramp-compat-user-error): New defun.

* net/tramp-adb.el (tramp-adb-handle-shell-command):
* net/tramp-gvfs.el (top):
* net/tramp.el (tramp-find-method, tramp-dissect-file-name)
(tramp-handle-shell-command): Use it.
(tramp-dissect-file-name): Raise an error when hostname is a
method name, and neither method nor user is specified.

* net/trampver.el: Update release number.