Update JSON decimal tests from upstream.
Update JSON decimal tests from upstream.

Yottaa/mgo.v2,Yottaa/mgo.v2,Yottaa/mgo.v2,deafgoat/mgo,deafgoat/mgo,hexadecy/mgo,Yottaa/mgo.v2,DroiTaipei/mgo,DroiTaipei/mgo,DroiTaipei/mgo,hexadecy/mgo,deafgoat/mgo,DroiTaipei/mgo,hexadecy/mgo,deafgoat/mgo,hexadecy/mgo