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

tests/language/execute_finally9_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.
 // This test ensures that the finally block executes correctly when
 // there are throw, break and return statements in the finally block.
 
 class Hello {
  static var sum;
 
  static foo() {
    sum = 0;
    try {
      sum += 1;
      return 'hi';
-   } catch (var e) {
+   } catch (e) {
      sum += 1;
      throw 'ball';
      sum += 1;
    } finally {
      sum += 1;
      throw 'ball';
      sum += 1;
    }
  }
 
  static foo1() {
    bool loop = true;
    sum = 0;
    L:while (loop) {
      try {
        sum += 1;
        return 'hi';
-     } catch (var ex) {
+     } catch (ex) {
        sum += 1;
      } finally {
        try {
          L1:while (loop) {
            sum += 1;
            break L;
            sum += 1;
          }
-       } catch (var ex) {
+       } catch (ex) {
          sum += 1;
        } finally {
          sum += 1;
        }
      }
    }
  }
 
  static void main() {
    foo1();
    Expect.equals(3, sum);
    try {
      foo();
-   } catch (var e) {
+   } catch (e) {
+     // Ignore.
    }
    Expect.equals(2, sum);
  }
 
 }
 
 main() {
   Hello.main();
 }