(archive-tmpdir): Make the prefix of the temporary

(archive-tmpdir): Make the prefix of the temporary
directory absolute.
(file-name-invalid-regexp): New variable.
(archive-zip-case-fiddle): Doc fix.
(archive-remote): Make it permanent-local.
(archive-member-coding-system): New variable.
(archive-mode): Don't use write-contents-hooks for remote
archives.  Archives whose names are illegal for the current
filesystem are marked read-only.
(archive-summarize): Optional argument SHUT-UP makes it silent.
All callers changed.
(archive-unique-fname): New function.
(archive-maybe-copy): Use it.
(archive-maybe-copy, archive-write-file): Bind
coding-system-for-write to no-conversion.
(archive-maybe-update, archive-mode-revert): Bind
coding-system-for-read to no-conversion.
(archive-maybe-update): Remain at the same line in the archive
listing, after updating the archive.  Print the buffer name of the
archive to be saved.
(archive-extract): Mark archive members whose names are invalid as
read-only.  Don't set buffer-file-type.  Remove the write-contents
hook for remote archives.  Warn about read-only archives inside
other archives.
(archive-write-file-member): Handle remote archives.  Restore
value of last-coding-system-used.
(archive-*-write-file-member): Handle archives inside other
archives.  Save the value of last-coding-system-used.
(archive-write-file): New optional variable FILE: where to write
the archive; defaults to buffer-file-name, for remote archives.
(archive-zip-summarize, archive-zip-chmod-entry): Support VFAT
type of host filesystem.
(archive-zip-summarize): Don't fiddle letter case of mixed-case
file names.