(reftex-customize): Added call to customize browse.

(reftex-customize): Added call to customize browse.
(reftex-show-commentary): New function.
(reftex-label-alist): Prefix may contain % escapes.  Nth macro
argument may be context. May give two different context methods.
(reftex-default-label-alist-entries): Customization type changed.
(reftex-label-menu-flags): Extra flag for searches.
(reftex-cite-format): Changed completely, % escapes are now used.
(reftex-comment-citations): New variable.
(reftex-cite-comment-format): New variable.
(reftex-cite-punctuation): New variable.
(reftex-make-master-buffer): Changed name of master buffer,
removed interactive.  Runs a hook on the buffer. Interprete
TEXINPUTS environment variable.  Allow naked argument for \input.
Master buffer is now in fundamental mode.
(reftex-access-scan-info): Name of master buffer changed.
(reftex-section-regexp): Is now computed from section levels,
not set	independantly.
(reftex-section-levels): Made customizable.
(reftex-label): Interpret % escapes in prefix.  Use label format if given.
(reftex-replace-prefix-escapes): New function.
(reftex-uniquify-label): New function.
(reftex-next-label-number): Function definition removed.
(reftex-reference): Use reftex-uniquify-label.
Allow more general label commands.
(reftex-offer-label-menu):
Interpret new flag in reftex-label-menu-flags.
(reftex-make-and-insert-label-list): Use text properties to record label index.
(reftex-find-nearby-label): Allow more general label commands.
(reftex-scan-buffer-for-labels): Allow more general label commands.
(reftex-init-section-numbers): New function.
(reftex-allow-for-ctrl-m): New function.
(reftex-label-info-update): Allow more general label commands.
(reftex-label-info): New parameter derive.
(reftex-short-context): Interprete integer parse as nth arg of macro.
(reftex-nth-parens-substring): New function.
(reftex-select-item): Interprete the new 'cnt text property.
(reftex-pop-to-label): Allow more general label commands.
(reftex-nicify-text): Allow more general label commands.
(reftex-toc): Remember previous window configuration.  Use text
properties to store info.  Bind mouse-2.
(reftex-make-master-buffer): New Hook.
(reftex-last-window-height): New variable.
(reftex-toc-show-help): New function.
(reftex-toc-help): New constant.
(reftex-nearest-section): Use text properties to store info.
(reftex-empty-toc-buffer): New function.
(reftex-re-enlarge): New function.
(reftex-toc-goto-line): New function.
(reftex-toc-mouse-goto-line-and-hide): New function.
(reftex-cite-format-builtin): New constant.
(reftex-cite-format-default): Constant removed.
(reftex-cite-format-1-author-simple): Constant removed.
(reftex-cite-format-2-authors): Constant removed.
(reftex-get-bib-names): New function.
(reftex-get-bib-authors) Function removed.
(reftex-format-bib-entry): Use now reftex-get-bib-names.
(reftex-citation): Completely rewritten. Offers selection of
different cite macros first, then the reference menu.  Works with
the various new variables mentioned above.  Accept the `a' key to
use all selected citations.
(reftex-insert-bib-matches): New function.
(reftex-format-citation): Now interpretes % escapes.
(reftex-select-item): Emulate a search in the menu buffer.
Interpret the 'cnt text property.
(reftex-view-crossref): Allow more general label, cite and ref macros.
(reftex-highlight-overlays): Add third overlay for search
in menu buffer.
(reftex-label-alist-builtin): xalignat and xxalignat environments
added.  Slightly reorganized.
(reftex-reset-scanning-information): Just empty *toc* buffer, do
not kill it.
(reftex-compute-ref-cite-tables): Read the new options in
`reftex-label-alist' and store them.  Calculate the section regexp.