Adding images to api docs

["Matthias Clasen" <matthiasc poet de>]

Hi,

I have done an experiment with adding the stock icons to the api docs.
To do this, I added

HTML_IMAGES =    \
    ../../../gtk/stock-items/stock_add.png    \
    ../../../gtk/stock-items/stock_button_apply.png    \

... and so on for all stock items.

This turns up a few small problems in the generic parts of the
docs/reference/gtk/Makefile.am:

The line

    test "x$(HTML_IMAGES)" = "x" || ( c $(srcdir) && cp $(HTML_IMAGES)
html )

would better be written like

    cd $(srcdir) && ( images="$(HTML_IMAGES)" ; \
    for i in $$images ; do \
        cp $$i html ; \
    done )

otherwise I run into line length limitations (of make, shell or cp ?) and
get errors like

cp: cannot stat '../../../gtk/stock-icons/stock_add.png': no such file or
directory


I can fix this for the gtk doc Makefile.am, but I guess the generic
Makefile.am example
needs fixing as well.

Matthias