title: Error when building Android Project on Window 10
body: <p>When building for Android I keep having this error:</p>
  
  <blockquote>
    <p>Severity  Code    Description Project File    Line    Suppression State
    Error       Failed to create JavaTypeInfo for class: Android.Support.V4.View.Accessibility.AccessibilityManagerCompat/IAccessibilityStateChangeListenerImplementor due to System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Users\Iain Smith\Documents\Developer\Work\Clients\Client1\Project1\Xamarin.Dev.Playground\Source\Client1.Playground.Android\obj\Debug\90\android\src\mono\android\support\v4\view\accessibility\AccessibilityManagerCompat_AccessibilityStateChangeListenerImplementor.java'.
       at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
       at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
       at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)
       at Xamarin.Android.Tools.Files.CopyIfStreamChanged(Stream stream, String destination)
       at Xamarin.Android.Tasks.Generator.CreateJavaSources(TaskLoggingHelper log, IEnumerable`1 javaTypes, String outputPath, String applicationJavaClass, Boolean useSharedRuntime, Boolean generateOnCreateOverrides, Boolean hasExportReference)    Client1.Playground.Android          </p>
  </blockquote>
  
  <p>What is causing it? How do I fix it? Doesn't seem to happen on the CI builds.</p>