Lots of cleanup, more work on certificates, some security fixes.

node/Switch.hpp

@@ -179,6 +179,13 @@ public:
 	 */
 	void requestWhois(const Address &addr);
 
+	/**
+	 * Cancel WHOIS for an address
+	 *
+	 * @param addr Address to cancel
+	 */
+	void cancelWhoisRequest(const Address &addr);
+
 	/**
 	 * Run any processes that are waiting for this peer
 	 *