I am using Visual Studio 2012, and you can click to select multiple items in Solution Explorer, and then edit each item "Copy to output directory" immediately in the "Properties" window.
Of course, this is not equivalent to the solution you are looking for functionally, but semantically it is. And, hopefully, the next person who stumbles upon this post with the help of a huge fix folder (as with me) should not be immersed in the .csproj file.
Hope this helps!
Freestyle076 Jul 28 '15 at 21:00 2015-07-28 21:00
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