added web structure analysis for a special domain that can be requested from the api.
Example:
http://localhost:8080/api/webstructure.xml?about=www.yacy.net
returns a xml with the following content:
<?xml version="1.0"?>
<webstructure>
<domains reference="reverse" count="1" maxref="300">
<domain host="www.yacy.net" id="FXg39Q" date="20090401">
<citation host="java.sun.com" id="o-R3yY" count="1" />
<citation host="yacy-suche.de" id="-KCLaB" count="1" />
<citation host="suma-ev.de" id="VRAHIA" count="1" />
<citation host="www.kit.edu" id="EMaLDQ" count="1" />
<citation host="yacy.net" id="Fh1hyQ" count="1" />
<citation host="www.fzk.de" id="V2Kl-A" count="1" />
<citation host="en.wikipedia.org" id="rwtdfR" count="3" />
<citation host="vimeo.com" id="MmdQDY" count="3" />
<citation host="liebel.fzk.de" id="sX4ozA" count="6" />
</domain>
</domains>
</webstructure>
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5766 6c8d7289-2bf4-0310-a012-ef5d649a1542