Fix compatibility problem in Tramp

Fix compatibility problem in Tramp

* lisp/net/tramp.el (tramp-interrupt-process): Better error handling.

* lisp/net/tramp-compat.el (default-toplevel-value): Move up.
(top): Do not call `tramp-change-syntax' anymore.
(tramp-compat-directory-name-p): New defalias.

* lisp/net/tramp-adb.el (tramp-adb-handle-copy-file):
* lisp/net/tramp-sh.el (tramp-sh-handle-copy-directory):
* lisp/net/tramp-smb.el (tramp-smb-handle-copy-directory)
(tramp-smb-handle-copy-file): Use it.

* test/lisp/net/tramp-tests.el (tramp-test28-interrupt-process):
Modify test.