Fixed JarResolverLib test.

JarResolverLib.csproj is solely used for the unit test and was
missing some dependencies required to compile the FileUtils module.

Change-Id: Ia4c1e1c41d454929af86d6bc11aaa4b0cf5dccf8

Author: Stewart Miles

source/JarResolverLib/JarResolverLib.csproj

@@ -47,7 +47,10 @@
     <Compile Include="src\Google.JarResolver\AssemblyInfo.cs" />
     <Compile Include="src\Google.JarResolver\Dependency.cs" />
     <Compile Include="src\Google.JarResolver\PlayServicesSupport.cs" />
+    <Compile Include="..\VersionHandlerImpl\src\ExecutionEnvironment.cs" />
     <Compile Include="..\VersionHandlerImpl\src\FileUtils.cs" />
+    <Compile Include="..\VersionHandlerImpl\src\Logger.cs" />
+    <Compile Include="..\VersionHandler\src\VersionHandler.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <ItemGroup>