UPnP redundant casts

router/java/src/org/cybergarage/http/HTTPPacket.java

router/java/src/org/cybergarage/http/HTTPServerList.java

router/java/src/org/cybergarage/http/ParameterList.java

router/java/src/org/cybergarage/upnp/Action.java

router/java/src/org/cybergarage/upnp/ActionList.java

router/java/src/org/cybergarage/upnp/AllowedValueList.java

router/java/src/org/cybergarage/upnp/ArgumentList.java

router/java/src/org/cybergarage/upnp/Device.java

router/java/src/org/cybergarage/upnp/DeviceList.java

router/java/src/org/cybergarage/upnp/IconList.java

router/java/src/org/cybergarage/upnp/ServiceStateTable.java

router/java/src/org/cybergarage/upnp/UPnP.java

router/java/src/org/cybergarage/upnp/event/PropertyList.java

...a/src/org/cybergarage/upnp/ssdp/SSDPNotifySocketList.java

...g/cybergarage/upnp/ssdp/SSDPSearchResponseSocketList.java

...a/src/org/cybergarage/upnp/ssdp/SSDPSearchSocketList.java

router/java/src/org/cybergarage/xml/AttributeList.java

router/java/src/org/cybergarage/xml/NodeList.java