Replace DnDns with HeijdenDns

HeijdenDns seems to do a better job at querying SRV records

MinecraftClient/Protocol/Dns/Records/RecordDNAME.cs

@@ -0,0 +1,34 @@
+using System;
+/*
+ * http://tools.ietf.org/rfc/rfc2672.txt
+ * 
+3. The DNAME Resource Record
+
+   The DNAME RR has mnemonic DNAME and type code 39 (decimal).
+   DNAME has the following format:
+
+      <owner> <ttl> <class> DNAME <target>
+
+   The format is not class-sensitive.  All fields are required.  The
+   RDATA field <target> is a <domain-name> [DNSIS].
+
+ * 
+ */
+namespace Heijden.DNS
+{
+	public class RecordDNAME : Record
+	{
+		public string TARGET;
+
+		public RecordDNAME(RecordReader rr)
+		{
+			TARGET = rr.ReadDomainName();
+		}
+
+		public override string ToString()
+		{
+			return TARGET;
+		}
+
+	}
+}