CSHARP-476: Added support for calling constructors, factory methods or arbitrary code to instantiate an object during deserialization.
CSHARP-603: implemented Sasl authentication support as well as support for new delegated authentication support in server 2.4.
Merge branch 'master' of git://github.com/mongodb/mongo-csharp-driver

Conflicts:
	MongoDB.Driver/MongoDB.Driver.csproj