Rename OpenSim.Framework.Archive to OpenSim.Framework.Serialization

Update using statements and prebuild.xml. Also trim trailing whitespace.

OpenSim/Framework/Serialization/ArchiveConstants.cs

@@ -28,7 +28,7 @@
 using System.Collections.Generic;
 using OpenMetaverse;
 
-namespace OpenSim.Framework.Archive
+namespace OpenSim.Framework.Serialization
 {
     /// <summary>
     /// Constants for the archiving module

OpenSim/Framework/Serialization/TarArchiveReader.cs

@@ -31,7 +31,7 @@ using System.Reflection;
 using System.Text;
 using log4net;
 
-namespace OpenSim.Framework.Archive
+namespace OpenSim.Framework.Serialization
 {
     /// <summary>
     /// Temporary code to do the bare minimum required to read a tar archive for our purposes

OpenSim/Framework/Serialization/TarArchiveWriter.cs

@@ -30,7 +30,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Text;
 
-namespace OpenSim.Framework.Archive
+namespace OpenSim.Framework.Serialization
 {
     /// <summary>
     /// Temporary code to produce a tar archive in tar v7 format