package/iptables: update to 1.4.9.1 and cleanup: * call autogen.sh in...

package/iptables: update to 1.4.9.1 and cleanup: * call autogen.sh in Build/Prepare instead of Build/Compile * use PKG_INSTALL * re-enable static libs * add dep on libiptc & libxtables to ip6tables

SVN-Revision: 22582