- The package texinfo now requires makeinfo of the same version
to make sure that the correct Texinfo.pm is installed
- libzio is able to handle lz(ma) and xz files as well

- Update to 6.0
* Language:
+ new commands @sub and @sup, for textual subscripts and
superscripts.
+ new command @U to insert a Unicode character by code point.
* texinfo.tex:
+ @url/@uref output in PDF now the same as in DVI, showing the
url even if the second argument is given, not just as a link
target. TeX option \urefurlonlylinktrue gives previous
behavior, of invisible urls.
+ PDF-only \linkcolor and \urlcolor specify colors (default
black).
* texi2any:
+ customization variable TOP_NODE_UP_URL now replaces all (dir)
references; recommended setting for GNU packages is /manual/.
+ new customization variable INDEX_SPECIAL_CHARS_WARNING to
complain when index entries contain a colon.
+ Docbook output no longer uses for @r.
+ -D'var val' on the command line works as intended again.
+ --plaintext output can be split.
+ a bit faster.
* info:
+ invoking as `info foo bar' looks for bar as an index entry
in manual foo, if not found as a top-level menu item.
+ invoking info with an absolute or explicitly relative file
name (./foo.info, /tmp/foo.info, etc.) just visits that file.