User DEBUG static flag to reduce logging overhead

SNMPEngine.cs

@@ -81,6 +81,7 @@ namespace ln.snmp
                     IPEndPoint remoteEndpoint = new IPEndPoint(IPAddress.Any, 0);
                     byte[] datagram = LocalEndpoint.Receive(ref remoteEndpoint);
 
+                    if (DEBUG)
                         Logging.Log(LogLevel.DEBUGDETAIL,"SNMPClient: Received:   {0}", BitConverter.ToString(datagram));
 
                     ASN1Value asn = new ASN1Value(datagram);

types/SnmpV2Message.cs

@@ -22,12 +22,16 @@ namespace ln.snmp.types
         {
         }
         public SnmpV2Message(ASN1Value value)
-            :this()
+            : this()
         {
             snmpCommunity = (OctetString)value.Items[1];
 
+            if (SNMPEngine.DEBUG)
                 Logging.Log(LogLevel.DEBUG, "ASN1Value->PDU: {0}", value.Items[2]);
+
             snmpPDU = (PDU)value.Items[2];
+
+            if (SNMPEngine.DEBUG)
                 Logging.Log(LogLevel.DEBUG, "PDU:            {0}", snmpPDU);
         }