Serialization: Support dynamic objects properly.

[StringEpsilon]

Done:

• PhpDynamicObject
• ExpandoObject

ToDo:

• Full support for System.Dynamic.DynamicObject and other implementations of System.Dynamic.IDynamicMetaObjectProvider

[StringEpsilon]

Full support for all System.Dynamic.DynamicObjects looks like a much more complicated issue than I first thought. Having support for the PhpDynamicObject and the ExpandoObject will have to do for 1.0.