Upgrade to .Net 4.0

Fix #654

Author: nulltoken

Lib/MoQ/Moq.dll

@@ -1,5 +1,4 @@
-using System;
-using System.IO;
+using System.IO;
 using System.Linq;
 using System.Text;
 using LibGit2Sharp.Tests.TestHelpers;

Lib/MoQ/Moq.xml

@@ -10,15 +10,16 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>LibGit2Sharp.Tests</RootNamespace>
     <AssemblyName>LibGit2Sharp.Tests</AssemblyName>
-    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>TRACE;DEBUG;NET35</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;NET40</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <DocumentationFile />
@@ -37,7 +38,7 @@
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <OutputPath>bin\Leaks\</OutputPath>
-    <DefineConstants>TRACE;DEBUG;NET35;LEAKS</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;NET40;LEAKS</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <DocumentationFile />
@@ -96,7 +97,6 @@
     <Compile Include="DiffTreeToTreeFixture.cs" />
     <Compile Include="RepositoryOptionsFixture.cs" />
     <Compile Include="ResetHeadFixture.cs" />
-    <Compile Include="LazyFixture.cs" />
     <Compile Include="FetchFixture.cs" />
     <Compile Include="ResetIndexFixture.cs" />
     <Compile Include="StatusFixture.cs" />
@@ -122,7 +122,6 @@
     <Compile Include="TestHelpers\SkippableFactAttribute.cs" />
     <Compile Include="TreeDefinitionFixture.cs" />
     <Compile Include="TreeFixture.cs" />
-    <Compile Include="TupleFixture.cs" />
     <Compile Include="UnstageFixture.cs" />
   </ItemGroup>
   <ItemGroup>

LibGit2Sharp.Tests/BlobFixture.cs

@@ -1,6 +1,6 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Linq;
-using LibGit2Sharp.Core.Compat;
 using LibGit2Sharp.Tests.TestHelpers;
 using Xunit;
 using Xunit.Extensions;

LibGit2Sharp.Tests/LazyFixture.cs

@@ -2,7 +2,6 @@
 using System.Diagnostics;
 using System.Globalization;
 using LibGit2Sharp.Core;
-using LibGit2Sharp.Core.Compat;
 
 namespace LibGit2Sharp
 {

LibGit2Sharp.Tests/LibGit2Sharp.Tests.csproj

@@ -1,7 +1,6 @@
 using System;
 using System.Globalization;
 using LibGit2Sharp.Core;
-using LibGit2Sharp.Core.Compat;
 using LibGit2Sharp.Handlers;
 
 namespace LibGit2Sharp

LibGit2Sharp.Tests/NetworkFixture.cs

@@ -5,7 +5,6 @@
 using System.Globalization;
 using System.Linq;
 using LibGit2Sharp.Core;
-using LibGit2Sharp.Core.Compat;
 using LibGit2Sharp.Core.Handles;
 
 namespace LibGit2Sharp