(basic-save-buffer): Protect buffer-modified flag around first swap.

(basic-save-buffer): Protect buffer-modified flag around first swap.
(pmail-show-message): Protect buffer-modified flag around swap.
(pmail-change-major-mode-hook): Likewise.
(pmail-use-collection-buffer, pmail-swap-buffers-maybe): Likewise.

(pmail-error-bad-format): Always phrase the error as about an invalid message.
(pmail-convert-file-maybe): Don't use pmail-error-bad-format.
(pmail-mode-map): Move pmail-widen to C-c C-w.
(pmail-mode-1): Don't alter mode-line-modified.
(pmail-perm-variables): Turn off undo in view buffer.
(pmail-variables): Turn off undo.
(pmail-show-message): Delete useless calls to `widen'.
Avoid passing thru temp buffer if we don't need
base64 or quoted printable decoding for whole message.

(pmail-keywords): Variable deleted.
(pmail-last-label, pmail-last-multi-labels): Moved to pmailkwd.el.
(pmail-perm-variables): Don't mess with pmail-last-label.
Don't mess with pmail-keywords.
(pmail-copy-headers): Doc fix.
(pmail-set-header): New function.
(pmail-get-keywords): Doc fix.
(pmail-get-labels): New function.
(pmail-display-labels): Use pmail-get-labels.
(pmail-set-attribute): Mark pmail-buffer modified
if we change an attribute.

(pmail-apply-in-message): New function.
(pmail-message-labels-p): Function moved to pmailsum.el.
(pmail-message-recipients-p, pmail-message-regexp-p): Likewise.
(pmail-current-subject, pmail-current-subject-regexp): Fns deleted.
(pmail-simplified-subject, pmail-simplified-subject-regexp): New fns.
(pmail-next-same-subject): Fetch each msg's subject and compare.

(pmail-speedbar-move-message): Use pmail-output.
(pmail-construct-io-menu): Use pmail-output.
(pmail-default-pmail-file): Variable deleted.
(pmail-auto-file): Use pmail-output.
(pmail-mode-map): Remove pmail-output-to-babyl-file.
Add pmail-output-as-seen.
(pmail-mode): Update output commands in doc string.