Fix build error.

Author: yfakariya

Sync.xml

@@ -142,7 +142,6 @@
     <Exclude File="*.ttinclude" />
     <Exclude Path="Serialization\AbstractSerializers\ISerializerCodeGenerationContext.cs" />
     <Exclude Path="Serialization\AbstractSerializers\ISerializerCodeGenerator.cs" />
-    <Exclude Path="Serialization\AbstractSerializers\SerializerSpecification.cs" />
     <Exclude Path="Serialization\CollectionSerializers\ReadOnlyCollectionMessagePackSerializer`2.cs" />
     <Exclude Path="Serialization\CollectionSerializers\ReadOnlyDictionaryMessagePackSerializer`3.cs" />
     <Exclude Path="Serialization\CodeDomSerializers\*" />
@@ -163,7 +162,6 @@
     <Exclude Path="Serialization\ExpressionSerializers\ExpressionCallbackReadOnlyDictionaryMessagePackSerializer`3.cs" />
     <Preserve Path="Serialization\LockRecursionPolicy.cs" />
     <Preserve Path="Serialization\ReaderWriterLockSlim.cs" />
-    <Exclude Path="Serialization\DefaultSerializerNameResolver.cs" />
     <Exclude Path="Serialization\ISerializerGeneratorConfiguration.cs" />
     <Exclude Path="Serialization\SerializerAssemblyGenerationConfiguration.cs" />
     <Exclude Path="Serialization\SerializerCodeGenerationResult.cs" />

src/MsgPack.Silverlight.5/MsgPack.Silverlight.5.csproj

@@ -232,6 +232,9 @@
     <Compile Include="..\MsgPack\Serialization\AbstractSerializers\SerializerMethod.cs">
       <Link>Serialization\AbstractSerializers\SerializerMethod.cs</Link>
     </Compile>
+    <Compile Include="..\MsgPack\Serialization\AbstractSerializers\SerializerSpecification.cs">
+      <Link>Serialization\AbstractSerializers\SerializerSpecification.cs</Link>
+    </Compile>
     <Compile Include="..\MsgPack\Serialization\CollectionDetailedKind.cs">
       <Link>Serialization\CollectionDetailedKind.cs</Link>
     </Compile>
@@ -295,6 +298,9 @@
     <Compile Include="..\MsgPack\Serialization\DefaultConcreteTypeRepository.cs">
       <Link>Serialization\DefaultConcreteTypeRepository.cs</Link>
     </Compile>
+    <Compile Include="..\MsgPack\Serialization\DefaultSerializerNameResolver.cs">
+      <Link>Serialization\DefaultSerializerNameResolver.cs</Link>
+    </Compile>
     <Compile Include="..\MsgPack\Serialization\DefaultSerializers\AbstractCollectionMessagePackSerializer`2.cs">
       <Link>Serialization\DefaultSerializers\AbstractCollectionMessagePackSerializer`2.cs</Link>
     </Compile>

src/MsgPack/Serialization/SerializationTarget.cs

@@ -523,9 +523,11 @@ private static void VerifyKeyUniqueness( IList<SerializingMember> result )
 			}
 		}
 
+#if !NETFX_CORE && !SILVERLIGHT
 		public static bool BuiltInSerializerExists( ISerializerGeneratorConfiguration configuration, Type type, CollectionTraits traits )
 		{
 			return GenericSerializer.IsSupported( type, traits, configuration.PreferReflectionBasedSerializer ) || SerializerRepository.InternalDefault.Contains( type );
 		}
+#endif // !NETFX_CORE && !SILVERLIGHT
 	}
 }