[tldoc] images in html

[Karl Berry]

    The images are missing in the HTML version of texlive-fr. I remember

I was responsible for breaking all those images when I deleted the
duplicate files at the last minute.  Stupid me.

    It was rev. 15990 (Html file path for pictures) made by Siep in 
    texlive-en/live4ht.cfg:

    < \Picture[pict]{\csname Gin at base\endcsname.png}%
    > \Picture[pict]{../texlive-common/\csname Gin at base\endcsname.png}%

However, it seems to me it would be better for this dir to be specified
in a runtime path instead of coding it in live4ht.cfg.  In fact,
TEXINPUTS already includes ../texlive-common when running via the
texlive-en/Makefile, so I didn't understand why they weren't being
found.  So it has been on my list of pending things to look into ever
since Siep's msg.

k