relax SVN archive

Added SVG and PNG files for the consistency testing icon.

This follows a thread started at:
https://mail.gna.org/public/relax-devel/2011-06/msg00137.html
Message-id: <BANLkTi=981VwxU9PwHG6+yt0G+de-dLmMw@...>

As discussed in this thread, a SVG file is attached, along with 2 PNG files,
one of 200 pixels width, and one of 100 pixels width, the height being scaled
to the image dimension (i.e. 200x94, and 100x47).