Update all tests

tests/corelib/big_integer_arith_vm_test.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.
 
 // Testing Bigints with and without intrinsics.
 // VMOptions=
 // VMOptions=--no_intrinsify
 // VMOptions=--no-background-compilation
 // VMOptions=--optimization_counter_threshold=10 --no-background_compilation
 
@@ skipping 404 matching lines @@
   } on OutOfMemoryError catch (e) {
     exceptionCaught = true;
   }
   Expect.equals(true, exceptionCaught);
 }
 
 main() {
   for (int i = 0; i < 10; i++) {
     Expect.equals(1234567890123456789, foo());
     Expect.equals(12345678901234567890, bar());
-    testSmiOverflow();  /// overflow: ok
-    testBigintAdd();  /// add: ok
-    testBigintSub();  /// sub: ok
-    testBigintMul();  /// mul: ok
-    testBigintTruncDiv();  /// trunDiv: ok
-    testBigintDiv();  /// div: ok
-    testBigintModulo();  /// mod: ok
-    testBigintModPow();  /// modPow: ok
-    testBigintModInverse();  /// modInv: ok
-    testBigintGcd();  /// gcd: ok
-    testBigintNegate();  /// negate: ok
-    testShiftAmount();  /// shift: ok
+    testSmiOverflow();  //# overflow: ok
+    testBigintAdd();  //# add: ok
+    testBigintSub();  //# sub: ok
+    testBigintMul();  //# mul: ok
+    testBigintTruncDiv();  //# trunDiv: ok
+    testBigintDiv();  //# div: ok
+    testBigintModulo();  //# mod: ok
+    testBigintModPow();  //# modPow: ok
+    testBigintModInverse();  //# modInv: ok
+    testBigintGcd();  //# gcd: ok
+    testBigintNegate();  //# negate: ok
+    testShiftAmount();  //# shift: ok
     Expect.equals(12345678901234567890, (12345678901234567890).abs());
     Expect.equals(12345678901234567890, (-12345678901234567890).abs());
     var a = 10000000000000000000;
     var b = 10000000000000000001;
     Expect.equals(false, a.hashCode == b.hashCode);
     Expect.equals(true, a.hashCode == (b - 1).hashCode);
   }
 }