[NaCl Addin] Fix dependencies in visual studio

visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/DependencyParser.cs

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
 using System.IO;
 
@@ skipping 42 matching lines @@
                     break;
                 ParseLine(str);
             }
             reader.Close();
         }
 
         private void AddDependency(string filename)
         {
             filename = GCCUtilities.ConvertPathPosixToWindows(filename);
             filename = filename.Replace("\\ ", " ");
+            filename = filename.ToUpperInvariant();
+            filename = Path.GetFullPath(filename);
             m_dependencies.Add(filename);
         }
 
         /// <summary>
         /// Find the end of the current filename on the given line from a dependancy file.
         /// Normally this is the space char but, spaces can be escaped with backslash and
         /// end of string could also terminate the filename.
         /// </summary>
         private static int FindEndOfFilename(string line)
         {
@@ skipping 47 matching lines @@
             {
                 int end = FindEndOfFilename(line);
                 AddDependency(line.Substring(0, end));
                 if (end == line.Length)
                     break;
                 line = line.Substring(end + 1).Trim();
             }
         }
     }
 }