fix comments

csharp/src/AddressBook/AddressBook.csproj

 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\packages\xunit.runner.visualstudio.2.1.0-beta1-build1051\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\packages\xunit.runner.visualstudio.2.1.0-beta1-build1051\build\net20\xunit.runner.visualstudio.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
@@ -15,8 +14,6 @@
     <FileAlignment>512</FileAlignment>
     <StartupObject>Google.ProtocolBuffers.Examples.AddressBook.Program</StartupObject>
     <TargetFrameworkProfile>Client</TargetFrameworkProfile>
-    <NuGetPackageImportStamp>
-    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -48,14 +45,6 @@
     <Reference Include="System" />
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
-    <Reference Include="xunit, Version=1.9.2.1705, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\packages\xunit.1.9.2\lib\net20\xunit.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
-    <Reference Include="xunit.should, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\xunit.should.1.1\lib\net35\xunit.should.dll</HintPath>
-      <Private>True</Private>
-    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AddPerson.cs" />
@@ -73,17 +62,8 @@
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />
-    <None Include="packages.config" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
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-  </Target>
-  <Import Project="..\packages\xunit.MSBuild.1.9.2.3\build\xunit.MSBuild.targets" Condition="Exists('..\packages\xunit.MSBuild.1.9.2.3\build\xunit.MSBuild.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">

csharp/src/AddressBook/app.config

-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-	<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0,Profile=Client" /></startup>
-  <runtime>
-    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
-      <dependentAssembly>
-        <assemblyIdentity name="xunit" publicKeyToken="8d05b1bb7a6fdb6c" culture="neutral" />
-        <bindingRedirect oldVersion="0.0.0.0-1.9.2.1705" newVersion="1.9.2.1705" />
-      </dependentAssembly>
-    </assemblyBinding>
-  </runtime>
-</configuration>
+<?xml version="1.0"?>
+<configuration>
+	<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0,Profile=Client"/></startup></configuration>

csharp/src/ProtocolBuffers.Test/ProtocolBuffers.Test.csproj

@@ -76,7 +76,7 @@
     <Compile Include="Compatibility\TestResources.cs" />
     <Compile Include="Compatibility\TextCompatibilityTests.cs" />
     <Compile Include="Compatibility\XmlCompatibilityTests.cs" />
-    <Compile Include="TestProtos\FieldPresense.cs" />
+    <Compile Include="TestProtos\FieldPresence.cs" />
     <Compile Include="TestProtos\GoogleSize.cs" />
     <Compile Include="TestProtos\GoogleSpeed.cs" />
     <Compile Include="TestProtos\Unittest.cs" />
@@ -151,4 +151,4 @@
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   </Target>
-</Project>
+</Project>
\ No newline at end of file