Synchronize with Tramp repository.

Synchronize with Tramp repository.

* net/tramp.el (tramp-completion-function-alist)
(tramp-file-name-regexp, tramp-chunksize)
(tramp-local-coding-commands, tramp-remote-coding-commands): Fix
docstring.
(tramp-remote-process-environment): Use `format' instead of
`concat'.
(tramp-handle-directory-files-and-attributes)
(tramp-get-remote-path): Use `copy-tree'.
(tramp-handle-file-name-all-completions): Backward/ XEmacs
compatibility: Use `completion-ignore-case' if
`read-file-name-completion-ignore-case' does not exist.
(tramp-do-copy-or-rename-file-directly): Do not use
`tramp-handle-file-remote-p'.
(tramp-do-copy-or-rename-file-out-of-band): Use
`tramp-compat-delete-directory'.
(tramp-do-copy-or-rename-file-out-of-band)
(tramp-compute-multi-hops, tramp-maybe-open-connection): Use
`format-spec-make'.
(tramp-find-foreign-file-name-handler)
(tramp-advice-make-auto-save-file-name)
(tramp-set-auto-save-file-modes): Remove superfluous check for
`stringp'.  This is done inside `tramp-tramp-file-p'.
(tramp-debug-outline-regexp): New defconst.
(tramp-get-debug-buffer): Use it.
(tramp-check-for-regexp): Use (forward-line 1).
(tramp-set-auto-save-file-modes): Adapt version check.

* net/tramp-compat.el (tramp-advice-file-expand-wildcards): Wrap
call of `featurep' for 2nd argument.
(tramp-compat-make-temp-file): Simplify fallback implementation.
(tramp-compat-copy-tree): Remove function.
(tramp-compat-delete-directory): Provide implementation for older
Emacsen.

* net/tramp-fish.el (tramp-fish-handle-directory-files-and-attributes):
Do not use `tramp-fish-handle-file-attributes.

* net/trampver.el: Update release number.