[PATCH] Small *.texi{,info} fixes for texinfo 5.0 (PR bootstrap/56258)

[Arnaud Charlet]

> Examples of warnings (many of them occuring many up to several dozens of
> times):
> warning: @anchor should not appear in @heading
> warning: @title missing argument
> warning: @itemize has text but no @item
> warning: node `XXX' is next for `YYY' in menu but not in sectioning
> warning: node `XXX' is up for `YYY' in menu but not in sectioning
> warning: @itemize has text but no @item
> warning: node next `XXX' in menu `YYY' and in sectioning `ZZZ' differ
> warning: @tex should only appear at a line beginning
> warning: command @tie does not accept arguments
> 
> Ok for trunk?

The ChangeLog entries should be split in the various directories.
Changes in the ada directory are OK, thanks.

Arno