copyfiles.xml

<?xml version="1.0"?>

<Project DefaultTargets="CopyFiles" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

  <ItemGroup>
    <TargetFiles Include="srcdir\**"
                 Exclude="**\*.obj;**\*.bak;**\.svn\**" />
  </ItemGroup>
  
  <Target Name="CopyFiles">
    <Copy SourceFiles="@(TargetFiles)"
          DestinationFiles="@(TargetFiles->'destdir\%(RecursiveDir)\%(Filename)%(Extension)')"
          SkipUnchangedFiles="true" />  
  </Target>

</Project>