Several performance tweaks
- Removed default value assingment when default is equal to default(T)
- Added Benchmarks for most types and repeated/packed arrays
- Left PopsicleList's list fields uninitialized util needed
- Changed CodedInputStream's repated/packed reader
- Changed Enum writers to simply cast to int
- Changed the WriteEnum to use object rawValue that provides .ToString() if needed
- Should be fully on par with original library for performance, gaining 2x-3x in some cases
diff --git a/src/ProtocolBuffers.Test/TestProtos/UnitTestMessageSetProtoFile.cs b/src/ProtocolBuffers.Test/TestProtos/UnitTestMessageSetProtoFile.cs
index fe46892..ec1670f 100644
--- a/src/ProtocolBuffers.Test/TestProtos/UnitTestMessageSetProtoFile.cs
+++ b/src/ProtocolBuffers.Test/TestProtos/UnitTestMessageSetProtoFile.cs
@@ -593,7 +593,7 @@
     public static pb::GeneratedExtensionBase<global::Google.ProtocolBuffers.TestProtos.TestMessageSetExtension1> MessageSetExtension;

     public const int IFieldNumber = 15;

     private bool hasI;

-    private int i_ = 0;

+    private int i_;

     public bool HasI {

       get { return hasI; }

     }

@@ -1106,7 +1106,7 @@
         

         public const int TypeIdFieldNumber = 2;

         private bool hasTypeId;

-        private int typeId_ = 0;

+        private int typeId_;

         public bool HasTypeId {

           get { return hasTypeId; }

         }