Deprecate Math object in corelib in favor of dart:math library.

tests/isolate/mandel_isolate_test.dart

 // Copyright (c) 2012, 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.
 
 #library('MandelIsolateTest');
 #import('dart:isolate');
+#import('dart:math');
 #import('../../pkg/unittest/unittest.dart');
 
 final TERMINATION_MESSAGE = -1;
 final N = 100;
 final ISOLATES = 20;
 
 main() {
   test("Render Mandelbrot in parallel", () {
     final state = new MandelbrotState();
     state._validated.future.then(expectAsync1((result) {
       expect(result, isTrue);
     }));
-    for (int i = 0; i < Math.min(ISOLATES, N); i++) state.startClient(i);
+    for (int i = 0; i < min(ISOLATES, N); i++) state.startClient(i);
   });
 }
 
 
 class MandelbrotState {
 
   MandelbrotState() {
     _result = new List<List<int>>(N);
     _lineProcessedBy = new List<LineProcessorClient>(N);
     _sent = 0;
@@ skipping 102 matching lines @@
 void processLines() {
   port.receive((message, SendPort replyTo) {
     if (message == TERMINATION_MESSAGE) {
       assert(replyTo == null);
       port.close();
     } else {
       replyTo.send(processLine(message), null);
     }
   });
 }