- Move double and int implementations into dart:core and make them private.

lib/double.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-class Double implements double {
-  factory Double.fromInteger(int value)
+class _Double implements double {
+  factory _Double.fromInteger(int value)
       native "Double_doubleFromInteger";
   int hashCode() {
     try {
       return toInt();
     } on FormatException catch (e) {
       return 0;
     }
   }
   double operator +(num other) {
     return add_(other.toDouble());
@@ skipping 50 matching lines @@
     return greaterThan_(other.toDouble());
   }
   bool greaterThan_(double other) native "Double_greaterThan";
   bool operator >=(num other) {
     return (this == other) ||  (this > other);
   }
   bool operator <=(num other) {
     return (this == other) ||  (this < other);
   }
   double addFromInteger(int other) {
-    return new Double.fromInteger(other) + this;
+    return new _Double.fromInteger(other) + this;
   }
   double subFromInteger(int other) {
-    return new Double.fromInteger(other) - this;
+    return new _Double.fromInteger(other) - this;
   }
   double mulFromInteger(int other) {
-    return new Double.fromInteger(other) * this;
+    return new _Double.fromInteger(other) * this;
   }
   double truncDivFromInteger(int other) {
-    return new Double.fromInteger(other) ~/ this;
+    return new _Double.fromInteger(other) ~/ this;
   }
   double moduloFromInteger(int other) {
-    return new Double.fromInteger(other) % this;
+    return new _Double.fromInteger(other) % this;
   }
   double remainderFromInteger(int other) {
-    return new Double.fromInteger(other).remainder(this);
+    return new _Double.fromInteger(other).remainder(this);
   }
 
   bool greaterThanFromInteger(int other) native "Double_greaterThanFromInteger";
 
   bool isNegative() native "Double_isNegative";
   bool isInfinite() native "Double_isInfinite";
   bool isNaN() native "Double_isNaN";
 
   double abs() {
     // Handle negative 0.0.
@@ skipping 119 matching lines @@
         return EQUAL;
       }
     } else if (isNaN()) {
       return other.isNaN() ? EQUAL : GREATER;
     } else {
       // Other is NaN.
       return LESS;
     }
   }
 }