Update almost all tests (except co19) to use the new try-catch syntax.

tests/language/call_through_getter_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.
 
 // Tests that we can call functions through getters.
 
 const TOP_LEVEL_CONST = 1;
 const TOP_LEVEL_CONST_REF = TOP_LEVEL_CONST;
 const TOP_LEVEL_NULL = null;
 
@@ skipping 103 matching lines @@
           " got: ${exception}");
     }
   }
 
   static catchException(fn) {
     bool caught = false;
     var result = null;
     try {
       fn();
       Expect.equals(true, false);  // Shouldn't reach this.
-    } catch (var e) {
+    } catch (e) {
       caught = true;
       result = e;
     }
     Expect.equals(true, caught);
     return result;
   }
 
 }
 
 
@@ skipping 21 matching lines @@
   get z { _mark('z'); return 2; }
 
   _mark(m) { _order.add(m); return _order.toString(); }
   StringBuffer _order;
 
 }
 
 main() {
   CallThroughGetterTest.testMain();
 }