CSHARP-1901: Fix order of arguments to ArgumentException constructor.

Author: rstam

src/MongoDB.Bson/ObjectModel/BsonDocument.cs

@@ -669,7 +669,7 @@ public virtual BsonDocument AddRange(IDictionary dictionary)
             {
                 if (entry.Key == null)
                 {
-                    throw new ArgumentException("keys", "A key passed to BsonDocument.AddRange is null.");
+                    throw new ArgumentException("A key passed to BsonDocument.AddRange is null.", "keys");
                 }
                 if (entry.Key.GetType() != typeof(string))
                 {

src/MongoDB.Bson/Serialization/BsonDocumentBackedClass.cs

@@ -127,7 +127,7 @@ protected void SetValue(string memberName, object value)
             if (!_serializer.TryGetMemberSerializationInfo(memberName, out info))
             {
                 var message = string.Format("The member {0} does not exist.", memberName);
-                throw new ArgumentException("memberName", message);
+                throw new ArgumentException(message, "memberName");
             }
 
             var bsonValue = info.SerializeValue(value);

src/MongoDB.Driver.Core/Core/Misc/Ensure.cs

@@ -57,7 +57,7 @@ public static T IsEqualTo<T>(T value, T comparand, string paramName)
             if (!value.Equals(comparand))
             {
                 var message = string.Format("Value is not equal to {1}: {0}.", value, comparand);
-                throw new ArgumentException(paramName, message);
+                throw new ArgumentException(message, paramName);
             }
             return value;
         }