Updating NuGet integration

Using latest version
Namespace change from NuPack to NuGet
Adding tests for package creation

--HG--
branch : nuget
extra : transplant_source : H%D0%91G%21%E4%22x%00%B6eX%8E%98%04%FE%2B%B57%28

src/Orchard.Tests/Orchard.Framework.Tests.csproj

@@ -245,6 +245,7 @@
     <Compile Include="Mvc\Routes\UrlPrefixTests.cs" />
     <Compile Include="Records\BigRecord.cs" />
     <Compile Include="Scripting\ScriptingTests.cs" />
+    <Compile Include="Stubs\InMemoryWebSiteFolder.cs" />
     <Compile Include="Stubs\StubWorkContextAccessor.cs" />
     <Compile Include="Stubs\StubExtensionManager.cs" />
     <Compile Include="Stubs\StubReportsCoordinator.cs" />

src/Orchard.Tests/Stubs/InMemoryWebSiteFolder.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using Orchard.Caching;
+using Orchard.FileSystems.WebSite;
+
+namespace Orchard.Tests.Stubs {
+    public class InMemoryWebSiteFolder : IWebSiteFolder {
+        Dictionary<string, string> _contents = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+
+        public void AddFile(string virtualPath, string contents) {
+            _contents[Canonical(virtualPath)] = contents;
+        }
+
+        private string Canonical(string virtualPath) {
+            return virtualPath.Replace("\\", "/");
+        }
+
+        public IEnumerable<string> ListDirectories(string virtualPath) {
+            throw new NotImplementedException();
+        }
+
+        public IEnumerable<string> ListFiles(string virtualPath, bool recursive) {
+            throw new NotImplementedException();
+        }
+
+        public bool FileExists(string virtualPath) {
+            return _contents.ContainsKey(virtualPath);
+        }
+
+        public string ReadFile(string virtualPath) {
+            string value;
+            return _contents.TryGetValue(Canonical(virtualPath), out value) ? value : null;
+        }
+
+        public string ReadFile(string virtualPath, bool actualContent) {
+            throw new NotImplementedException();
+        }
+
+        public void CopyFileTo(string virtualPath, Stream destination) {
+            string value;
+            if (_contents.TryGetValue(Canonical(virtualPath), out value)) {
+                var bytes = Encoding.Default.GetBytes(value);
+                destination.Write(bytes, 0, bytes.Length);
+            }
+        }
+
+        public void CopyFileTo(string virtualPath, Stream destination, bool actualContent) {
+            throw new NotImplementedException();
+        }
+
+        public IVolatileToken WhenPathChanges(string virtualPath) {
+            throw new NotImplementedException();
+        }
+    }
+}