and link names if necessary.
(tar-header-block-summarize): Handle the case that file or link
names are multibyte.
(tar-summarize-buffer): At first set the current buffer unibyte,
then if there are multibyte file names, change it to multibyte.
(tar-mode): Get char position from tar-header-offset.
(tar-extract): Avoid multibyte<->unibyte conversion in
insert-buffer-subsring by setting both buffers unibyte
temporarily.
(tar-copy): Set the buffer unibyte while doing a work. Write
without code conversion.
(tar-expunge): Set the buffer unibyte while doing a work.
(tar-alter-one-field): Likewise.
(tar-clear-modification-flags): Compare byte position with
tar-header-offset.
(tar-subfile-save-buffer): Avoid multibyte<->unibyte conversion in
insert-buffer-subsring by setting both buffers unibyte
temporarily. Pay attention to multibyteness while updating the
descriptor-line.
(tar-mode-write-file): Write without code conversion.
(reftex-toc-toggle-file-boundary, reftex-toc-toggle-labels,
reftex-toc-toggle-context,reftex-find-start-point): New functions.
(reftex-toc-include-labels, reftex-toc-include-context,
reftex-toc-include-file-boundaries,
reftex-toc-keep-other-windows): New options.
(reftex-use-text-after-label-as-context): Option removed.
(reftex-extract-bib-entries): Protect use in non-latex buffers.
(reftex-toc-visit-location): Renamed from `reftex-toc-visit-line'.
(reftex-latin1-to-ascii): Works now with and without Mule.
(reftex-truncate): Removed special stuff for Emacs 20.2.
(reftex-get-offset): Made more general.
(reftex-show-label-location): Renamed from
`reftex-select-label-callback'.
(reftex-pop-to-label): Function removed (using
`reftex-show-label-location' instead.
(reftex-insert-docstruct): Renamed from
`reftex-make-and-insert-label-list'. Function args changed.
(reftex-toc): Now uses `reftex-insert-docstruct' and
`reftex-find-start-point'.
(reftex-select-item): Use `reftex-find-start-point'.
(reftex-toc-visit-line): Can display labels and file boundaries.
(reftex-TeX-master-file): `(TeX-master-file)' protected.
(Fbase64_encode_region, Fbase64_encode_string,
Fbase64_decode_region, Fbase64_decode_string): Don't allocate
more than MAX_ALLOCA bytes with alloca; otherwise use xmalloc.
