Provides a standard base class for facilitating comparison of value objects using all the object's properties.

For a discussion of the implementation of Equals/GetHashCode, see http://devlicio.us/blogs/billy_mccafferty/archive/2007/04/25/using-equals-gethashcode-effectively.aspx and http://groups.google.com/group/sharp-architecture/browse_thread/thread/f76d1678e68e3ece?hl=en for an in depth and conclusive resolution.