Add another language test for initializer ordering.

tests/language/src/Constructor7Test.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.
+// Dart test program for constructors and initializers.
+
+// Expect the initializer expressions E(i) to be evaluated
+// in the order 1, 2, 3, ...
+// This test has no inheritance but many fields to flush out issues with
+// ordering of fields.
+
+String trace = "";
+
+int E(int i) {
+  trace = trace.concat("$i-");
+  return i;
+}
+
+class A {
+  var j;      // Names are in reverse order to detect sorting by name...
+  var i = 0;  // Initialized odd/even to detect these inits affecting order.
+  var h;
+  var g = 0;
+  var f;
+  var e = 0;
+  var d;
+  var c = 0;
+  var b;
+  var a = 0;
+
+  A()
+    : a = E(1),  // Initializations in different order to decls.  Ascending...
+      b = E(2),
+      c = E(3),
+
+      f = E(4),  // Descending to be perverse...
+      e = E(5),
+      d = E(6),
+
+      g = E(7),  // Ascending again.
+      h = E(8),
+      i = E(9),
+      j = E(10) {
+
+    Expect.equals(1, a);
+    Expect.equals(2, b);
+    Expect.equals(3, c);
+
+    Expect.equals(4, f);
+    Expect.equals(5, e);
+    Expect.equals(6, d);
+
+    Expect.equals(7, g);
+    Expect.equals(8, h);
+    Expect.equals(9, i);
+    Expect.equals(10, j);
+  }
+}
+
+main() {
+  var x = new A();
+  Expect.equals('1-2-3-4-5-6-7-8-9-10-', trace);
+}