Some Tramp fixes

Some Tramp fixes

* doc/misc/tramp.texi (GVFS-based methods): Ban sftp RemoteCommand
option.

* lisp/net/tramp-adb.el (tramp-adb-handle-copy-file)
(tramp-adb-handle-rename-file): Avoid calling jka-compr when
writing the target file.

* lisp/net/tramp-sh.el (tramp-sh-handle-file-ownership-preserved-p):
Skip GROUP test on *BSD machines.

* test/lisp/net/tramp-tests.el (tramp-test17-insert-directory-one-file):
Skip for tamp-crypt.el.
(tramp--test-sh-no-ls--dired-p): Ignore errors.