SolutionName dependant references

gistfile1.xml

...
  <!-- The server uses SlimMath while the client and the editor use the XNA Framework. -->
  <Choose>
    <When Condition=" '$(SolutionName)' == 'TinkerWorX.Legeria.Server' ">
      <ItemGroup>
        <Reference Include="SlimMath">
          <HintPath>..\Assemblies\SlimMath.dll</HintPath>
        </Reference>
      </ItemGroup>
     </When>
     <Otherwise>
      <ItemGroup>
        <Reference Include="Microsoft.Xna.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=842cf8be1de50553, processorArchitecture=x86" />
      </ItemGroup>
    </Otherwise>
  </Choose>
...