CSHARP-1109: Begin moving common test helper methods into DLLs where they can be shared by more than one test project.
CSHARP-1109: Added overloads of BeUsing and EqualUsing that take an IEqualityComparer.
CSHARP-1138: Add IndexOfName method to BsonDocument.
CSHARP-1124: Remove the SharedConnectionPool class because we are not going to be supporting shared pipelined connections in 2.0.