Texinfo: Upgrade version from 4.8 to 4.13

Texinfo: Upgrade version from 4.8 to 4.13

This is the first upgrade of Texinfo in nearly 6 years.
There are 3 new executables:
  * texi2dvi
  * texi2pdf
  * pdftexi2dvi
As the host version 4.8 can not build the tex.info file, a full buildworld
is required to obtain this upgrade.

====================
 4.9 (29 June 2007)
====================
* GPLv3.
* texi2dvi:
  . new mode --build=tidy which supports compilation in a separate
    directory, where intermediate files are preserved.
  . new option --build-dir, to specify where the tidy build will take
    place, either locally or globally.  This allows avoiding the clutter
    while preserving auxiliary files.
  . new support for AUC-TeX: texi2dvi (weakly) supports arguments a la
    TeX such as `\nonstopmode\input{file.tex}'.
  . new options --ps and --dvipdf, useful especially for pstricks docs.
  . new option --src-specials, passed to TeX.
* texinfo.tex:
  . Latin1, Latin2, Latin9, and UTF-8 are supported -- only as well as
    the Computer Modern fonts can manage, which means primarily English
    and western European languages, to a limited extent.
  . png and jpg images supported in pdf output.
  . new Russian, Serbian, and Ukrainian translations for texinfo.tex:
    txi-ru.tex, txi-sr.tex, txi-uk.tex.
  . section names with \ characters work properly in pdf outlines.
  . have .toc files use @ as the escape character, instead of \.

==============
 Version 4.10
==============
Never published.

=========================
 4.11 (9 September 2007)
=========================
* Language:
  . @documentlanguage now supports an optional country code
    specification after the language code, a la gettext.
  . new command @allowcodebreaks controls breaks at _ and - within @code.
  . new command @frenchspacing controls spacing after sentences.
  . new command @fonttextsize allows changing body text font size to 10pt.
  . new command @textdegree{} produces the normal degrees symbol.
  . new command @thischapternum can be used in TeX headers/footers.
  . new commands for quotes: @quotedblleft @quotedblright
     @quoteleft @quoteright  @quotedblbase @quotesinglbase
     @guillemetleft @guillemetright @guilsinglleft @guilsinglright.
  . new option @set txicodequoteundirected produces an undirected quote
    in code and example output, instead of the regular right quote.
  . new option @set txicodequotebacktick produces a grave accent in
    code and example output, instead of the regular left quote.
* makeinfo:
  . The @documentlanguage locale is used to translate various doc strings.
  . --enable-encoding is now the default, meaning Info and plain text
    output use 8-bit characters given a supported @documentencoding.
  . new option --css-ref=URL for creating a stylesheet <link> in HTML.
  . new option --transliterate-file-names to use a reduction-to-ASCII
    algorithm for split HTML file names, useful for non-Latin-based langs.
  . @enddots{} outputs three dots instead of four, for consistency with
    texinfo.tex.
  . the Local Variables coding: setting written by --enable-encoding now
    comes at the very end, after the tags table, so that Emacs can find
    it in more cases.
  . @allow-recursion (not documented) is deprecated and produces a warning.
  . @quote-args (not documented) is now the default behavior.
  . centering and such take account of character widths.
  . the --reference-limit option is now a no-op.
  . improvements to XML and Docbook output and the DTD.
* texinfo.tex:
  . @thissection can now be used in custom headings, and @thischapter
    works reliably even without @set chapternewpage.  Custom headings
    have additional flexibility as well.
* texi2dvi:
  . pdftexi2dvi is a new wrapper to `texi2dvi --pdf', equal to texi2pdf,
    for the sake of AUC-TeX which prepends `pdf' to the compilation
    command when requested to produce PDF.
* info:
  . look for info files in the current directory first, by default.
  . when calling man, use -a if no explicit section is found.
  . avoid showing the top(1) man page for nonexistent info files.
* install-info:
  . new options --section-regex, --remove-exactly, --debug, --test.
* Distribution:
  . autoconf 2.60, automake 1.10, gettext 0.16.1.
  . gettext support now [external].
  . new translations: hu (Hungarian), rw (Kinyarwandan), vi (Vietnamese).
  . most common sources imported from gnulib.

======================
 4.12 (20 April 2008)
======================
* Language:
  . new commands @clicksequence, @click, and @clickstyle for documenting
    GUI sequences, and @arrow for the default glyph used.
  . new commands @geq{} and @leq{} for the normal >= and <= relations.
* install-info:
  . lzma compression supported.
  . Much work towards compatibility with Debian's independent
    implementation.  Changes in behavior:
    - new entries are formatted to start at column 34 by default.
    - existing entries are replaced by default.
    - new sections are alphabetized among existing sections.
    - if an entry being removed is the last one in a section, the
      section is also removed.
  . Also many new options:
    --section REGEX TITLE.
    --no-indent: disable formatting of new entries.
    --menuentry, --name: specify left-hand side of an entry.
    --dry-run: alias for --test.
    --regex REGEX: renamed from --section regex, adds to all sections
      matching REGEX by default.
    --add-once: add only to first specified or matching section.
    --align COL: start description at column COL.
    --calign COL: start continuation lines in description at COL.
    --max-width COL: wrap the description at COL.
  . New section in the Texinfo manual describing all this.
* info:
  Our goal with these changes to the default interface is to make Info
  documents more easily and quickly readable, especially by non-experts.
  . the PageUp and PageDown keys move through the whole document by
    default, instead of just the current node.
  . the h command shows the basic help, and H starts the Info tutorial.
  . the newly-bound x command deletes the current window, e.g. within help.
  . the scroll-step variable is set to 1 by default, for smooth scrolling.
  . the cursor-movement-scrolls-p variable is set to 1 by default, so
    link searches look through the whole document.
  . regular expression searches are supported, and are the default for
    both regular and incremental searches.
  . the new R command toggles between regexp and literal-string searches.
  . the new variable scroll-last-node controls scrolling at the end of
    the last node; by default, it now simply reports there are no more
    nodes.  To restore the old behavior, set scroll-last-node=Scroll.
  . the precise line number specified in index entries is used if avail.
  . --usage=info shows usage for standalone Info.
  . lzma compression supported.
* Distribution:
  . lang support for no removed/renamed to nb, per Norwegian translators.
  . new translation: es.
  . bug fixes in make check (and elsewhere).
  . gettext 0.17, automake 1.10.1, autoconf 2.62.

==========================
 4.13 (18 September 2008)
==========================
* A reference card for Texinfo is now available, in doc/refcard.  For
  convenience, preformatted PDFs for letter-size and A4 paper are included.
* makeinfo:
  . new option --internal-links for HTML output, to write a tsv file
    mapping indexed/toc terms to links, for easy reference from external
    documents.
  . - as an input file name reads standard input.
* info:
  . support for multibyte encodings such as UTF-8.
  . new option --show-malformed-multibytes, to display malformed multibyte
  sequences.
  . new environment variable INFO_MAN_COMMAND sets the name of man binary
  (use it if you a need to override PATH settings).
* install-info:
  . bug fix: support names w/ embedded periods (e.g., config.status) again.
* Distribution:
  . autoconf 2.63.