[nem-en] Declaring Properties in the constructor - ala Boo

[vc]

   > class SomeClass
   > {
   >     [Accessor(AnInt, flags=WantSetter)]
   >     private mutable _an_int : int;
   > 
   >     [Accessor(AString, flags=WantSetter)]
   >     private mutable _a_string : string;
   > 
   > 
   >     public this(i : int) {
   >         AnInt = i;
   >     }
   > }
   > 
   > sc = SomeClass(3, AString: "hello");
   
   Nemerle already support this:
   
   using Nemerle.Utility;
   
   public class A
   {
     public this(test : string)
     {
       _test = test;
     }
   
     [Accessor] _test : string;
   }
   
   def a = A(test = "test");
   _ = a;
   
   And mach more! :)
   
   using Nemerle.Utility;
   
   [Record]
   public class A
   {
     [Accessor] test : string;
   }
   
   def a = A(test = "test");
   _ = a;