-Added IgnoreAll to DefaultValueHandling which ignores all default class/struct/privative values

-Added support for DataMemberAttribute's EmitDefaultValue
-Fixed losing decimal precision when writing JValues
-Fixed error when calling ToList on empty JObjects and JArrays

Doc/ReducingSerializedJSONSize.aml

@@ -84,10 +84,10 @@
       <content>
         <para><codeEntityReference>T:Newtonsoft.Json.DefaultValueHandling</codeEntityReference>
         is an option on the JsonSerializer and controls how the serializer handles
-        properties with a default value. Setting a value of DefaultValueHandling.Ignore
+        properties with a default value. Setting a value of DefaultValueHandling.IgnoreAll
         will make the JsonSerializer skip writing any properties that have a default
         value to the JSON result. For object references this will be null. For value
-        types like int and DateTime the serializer will skip the default unitialized
+        types like int and DateTime the serializer will skip the default uninitialized
         value for that value type.</para>
 
         <para>Json.NET also allows you to customize what the default value of an individual