Mantis#3218. Thank you kindly, TLaukkan (Tommil) for a patch that:

* Added log4net dependency to physxplugin in prebuild.xml.
* Added missing m_log fields to classes.
* Replaced Console.WriteLine with appropriate m_log.Xxxx
* Tested that nant test target runs succesfully.
* Tested that local opensim sandbox starts up without errors.

OpenSim/Data/Tests/BasicGridTest.cs

@@ -32,11 +32,14 @@ using log4net.Config;
 using NUnit.Framework;
 using NUnit.Framework.SyntaxHelpers;
 using OpenMetaverse;
+using log4net;
+using System.Reflection;
 
 namespace OpenSim.Data.Tests
 {
     public class BasicGridTest
     {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
         public GridDataBase db;
         public UUID region1, region2, region3;
         public UUID zero = UUID.Zero;