When you're working on Code Analysis Rules
[http://social.msdn.microsoft.com/Forums/en-SG/vstscode/thread/5c152faf-289c-48cf-9afd-8fbd153a577f]
, Custom build activities, MSBuild tasks or anything that integrates directly in
Team Build or Visual Studio for that matter, you often need to reference
assemblies that ship with Visual Studio.
These