Support DTE.References.AddFromGAC method.

src/AddIns/Misc/PackageManagement/Project/Src/EnvDTE/References.cs

@@ -74,5 +74,13 @@ namespace ICSharpCode.PackageManagement.EnvDTE
 		{
 			return String.Equals(reference.Name, identity, StringComparison.InvariantCultureIgnoreCase);
 		}
+		
+		/// <summary>
+		/// This method should be in a separate AssemblyReferences class that is exposed by web projects.
+		/// </summary>
+		public void AddFromGAC(string assemblyName)
+		{
+			Add(assemblyName);
+		}
 	}
 }

src/AddIns/Misc/PackageManagement/Test/Src/EnvDTE/ReferencesTests.cs

@@ -83,6 +83,18 @@ namespace PackageManagement.Tests.EnvDTE
 			Assert.AreEqual(1, count);
 		}
 		
+		[Test]
+		public void AddFromGAC_AddGacAssemblyReference_ReferenceAddedToMSBuildProject()
+		{
+			CreateReferences();
+			references.AddFromGAC("System.Data");
+			
+			var reference = msbuildProject.Items[0] as ReferenceProjectItem;
+			string referenceName = reference.Name;
+			
+			Assert.AreEqual("System.Data", referenceName);
+		}
+		
 		[Test]
 		public void Add_AddGacAssemblyReferenceWhenReferenceAlreadyExistsInProjectButWithDifferentCase_ReferenceIsNotAddedToMSBuildProject()
 		{