Supporting svg fill-rule. Renaming the Comment to SVGComment.

SVG i have following format:

<svg ... style="fill-rule:evenodd;clip-rule:evenodd">
    <g><g><path ...> </g></g>
</svg>

When testing the lib with that format it was not detecting correctly the style. But it renders fine in firefox so format is ok.

I put the code with //Fixme, as maybe there is better fix for it. But did not put too much time into better solution.