gendocs.sh and images

[Simon Josefsson]

gendocs.sh doesn't seem to work well with images, after I ran it on
the latest libidn release, the HTML output just contain (in text)
"components.png" which probably should have been a <IMG
SRC="components.png"> or something.  The image file is not included in
*_html.tar.gz either.

I get the feeling images and texinfo doesn't work well in many
situation, but I'm trying to cope with them one by one...  I only have
one non-critical image now, but would like to add more images in the
future.

A related problem might be that gendocs.sh fail to include some files,
needed by .texi to build, in the source libidn.texi.tar.gz archive.
I'm using @verbatiminclude to include some files in the texi, they
aren't part of the libidn.texi.tar.gz.  Furthermore, the files are not
in the same directory as libidn.texi, which seem to cause other
problems too (think automake objdir != srcdir).  The file is source
code that is built into binaries, so I really don't want them in doc/.

Thanks.