Make UnresolvedAnalyzerReference public. It is useful outside of the...

Make UnresolvedAnalyzerReference public. It is useful outside of the command-line compilers. (changeset 1237429)

Src/Compilers/Core/Source/DiagnosticAnalyzer/AnalyzerReference.cs

@@ -32,7 +32,7 @@ public virtual string Display
         /// <summary>
         /// Returns true if this reference is an unresolved reference.
         /// </summary>
-        internal virtual bool IsUnresolved
+        public virtual bool IsUnresolved
         {
             get { return false; }
         }

Src/Compilers/Core/Source/DiagnosticAnalyzer/UnresolvedAnalyzerReference.cs

@@ -13,7 +13,7 @@ public sealed class UnresolvedAnalyzerReference : AnalyzerReference
     {
         private readonly string unresolvedPath;
 
-        internal UnresolvedAnalyzerReference(string unresolvedPath)
+        public UnresolvedAnalyzerReference(string unresolvedPath)
         {
             this.unresolvedPath = unresolvedPath;
         }
@@ -34,7 +34,7 @@ public override string FullPath
             }
         }
 
-        internal override bool IsUnresolved
+        public override bool IsUnresolved
         {
             get { return true; }
         }