Introduce static warning test for static/instance mismatch

tests/language/bad_override_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.
 
 class Fisk {
+  get fisk => null;     
+  static            /// 01: static type warning 
+  set fisk(x) {}
+
+  static            /// 02: static type warning 
+  get hest => null;     
+  set hest(x) {}        
+
   foo() {}
   var field;
   method() {}
   nullary() {}
 }
 
 class Hest extends Fisk {
   static foo() {}   /// 03: compile-time error
   field() {}        /// 04: compile-time error
   var method;       /// 05: compile-time error
   nullary(x) {}     /// 06: compile-time error
 }
 
 main() {
   new Fisk();
   new Hest();
 }