Tramp cleanup from recent test campaign

Tramp cleanup from recent test campaign

* lisp/net/tramp.el (tramp-barf-if-file-missing): Fix docstring.
(tramp-handle-file-directory-p): Don't suppress errors.
(tramp-handle-shell-command):
* lisp/net/tramp-adb.el (tramp-adb-handle-make-process):
Make insertion of a stderr file more robust.

* lisp/net/tramp-archive.el (tramp-archive-handle-directory-files):
Use `tramp-barf-if-file-missing'.

* lisp/net/tramp-sudoedit.el
(tramp-sudoedit-handle-file-name-all-completions): Protect against
errors from `file-directory-p'.

* lisp/net/tramp.el (tramp-wrong-passwd-regexp):
* lisp/net/tramp-adb.el (tramp-adb-prompt):
* lisp/net/tramp-sh.el (tramp-sh-inotifywait-process-filter):
* lisp/net/tramp-smb.el (tramp-smb-maybe-open-connection): Unify regexps.

* test/lisp/net/tramp-tests.el (tramp-test48-auto-load)
(tramp-test48-delay-load): Unify regexps.