I have an MVC 4 project in Visual Studio 2012. There is Logs
folder in it containing only four empty subfolders. This structure is needed by one library I use.
Add a PostBuild step to copy the folders.
I can't answer specifically for VS2012, but here's how you do this in VS2010:
If you click the edit button, the pop-up dialog will have a macros button that lists all of the available VS variables you can use to avoid using explicit paths, etc.
In VS2010, that modifies the project file to look something like this:
copy /Y "$(TargetDir)\*.*" "$(ProjectDir)\..\..\..\net40"