Can I use TargetFileName to place a file up a directory within a Visual Studio Template?
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I have a .cs file with a base class that I want to use from within many projects.  I've first placed this cs file above the project folder (along side the .sln).  Then, within the project, I've changed the 

`<Compile Include="BaseClass.cs">`   
to  
`<Compile Include="..\BaseClass.cs">`

This works, and the file icon then has a little shortcut arrow.

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The problem comes when I want to export the project as a project template.  The BaseClass does not get included in the template because it is outside the project folder.  I've tried adding the BaseClass.cs to the template zip and adding  
`<ProjectItem ReplaceParameters="true" TargetFileName="..\BaseClass.cs">BaseClass.cs</ProjectItem>`  
to the MyTemplate.vstemplate, but I get the error:  
`A target file name within the VSTemplate file is invalid, it contains a fully qualified path`  
If I remove the `..\`, it includes the file directly.
If I leave the `<ProjectItem>` out of the .vstemplate file, and just put `<Compile Include="..\BaseClass.cs">` in the .csproj file in the template, it looks for the file in `Users/me/AppData/Local...`.

How can I get the template to reference a file outside the project directory?
