Option to use object equality when serializing @JsonIdentityInfo objects

[beku8]

Current serializing strategy is using default JDK serializer, which uses object identity(==) when serializing circular references. But sometimes its a better idea to use object equality(equals & hashcode methods) so users can have more control.
So we can supply optional serializing strategy to use with @JsonIdentityInfo annotation.
p.s: You can look at this issue for more details, which I posted earlier thinking that this missing feature was a bug.

[cowtowncoder]

Implemented, turned out to be quite easy to do: enabled with SerializationConfig.USE_EQUALITY_FOR_OBJECT_ID.

[beku8]

Ok thank you I will try it out