generate_html : Adding new field to option structure in the generation of documentation from texinfo

[TrucomanX XnamocurT]

I am writing to call your attention and ask for your comments about a patch that I am proposing.

https://savannah.gnu.org/patch/?9002

This proposed patch add the 'package_doc_options' field to option structure returned by get_html_options
function. This change is proposed to add more functionalities to texinfo
documentation. By example to use CSS style files or specify additional commands, as:

options = get_html_options ("octave-forge");
options.package_doc = 'overview.texi';
options.package_doc_options = '--no-split --css-ref=manual.css';
generate_package_html ("bsltl", "bsltl_html", options);

You can see the result of this example in the link:

https://savannah.gnu.org/patch/download.php?file_id=37146

The patch can be download of :
https://savannah.gnu.org/patch/download.php?file_id=37147

Fernando