texinfo-6.4.91 pretest

[Gavin Smith]

The pretest for the next release of Texinfo has been updated:

https://alpha.gnu.org/gnu/texinfo/texinfo-6.4.91.tar.xz

There have only been a handful of changes since the last pretest
release (6.4.90). It is possible that this will be released as Texinfo
6.5 in a few days' time.

This is mainly a release to fix bugs. News since Texinfo 6.4:

* info:
  . some bugs fixed:
    . a bug where a segfault could happen in the regex search, for
      example when the user entered a single \ as the search string
    . another bug which could make nodes inaccessible in long "split"
      info files
    . a bug where it was not possible to follow a cross-reference
      that was split across more than one line has been fixed
  . do not fall back to a man page if following a cross-reference in an
    info file failed
  . if looking for a file failed, do not convert the name of a file to
    lower-case and look for it again

* texinfo.tex
  . some faulty definitions for Unicode characters have been changed or
    removed
  . fix indentation in table of contents for entries that are split
    across multiple lines

* texi2dvi
  . a bug that broke the processing of LaTeX files that did not
    use BibTeX has been fixed

* texi2any
  . output the encoding declaration of a HTML file earlier so it
    will always occur within first 1024 bytes of file
  . `INLINE_INSERTCOPYING' removed as a customization variable