Add new source to project as well.

runtime/IKVM.Runtime.8.csproj

@@ -142,6 +142,7 @@
       <SubType>Code</SubType>
     </Compile>
     <Compile Include="openjdk.cs" />
+    <Compile Include="openjdk\java.lang.invoke.cs" />
     <Compile Include="openjdk\sun.nio.ch.cs" />
     <Compile Include="PassiveWeakDictionary.cs" />
     <Compile Include="profiler.cs">