[Groff] pdfmark Support for Folded Outlines

[Keith Marshall]

Here's a patch to add support for the creation of folded outlines, in any PDF 
document formatted using the pdfmark macros.

I propose a ChangeLog entry as follows:

        Add support for folded outlines in PDF documents.

        * pdfmark.tmac (PDFOUTLINE.FOLDLEVEL): new register.
          (macro pdf:bm.emit): use it.

        * pdfmark.ms: document it.

Also Werner, when (if) you apply this, could you also please correct a typo 
in my previous entry (my error, sorry) in contrib/pdfmark/ChangeLog

        s/`--no-reference-dictionary-option'/`--no-reference-dictionary' option/

Thanks,
Keith.

pdfmark.patch.gz
Description: GNU Zip compressed data