Move frog/leg to lib/compiler/implementation.

frog/leg/ssa/ssa.dart

Index: frog/leg/ssa/ssa.dart
===================================================================
--- frog/leg/ssa/ssa.dart	(revision 5925)
+++ frog/leg/ssa/ssa.dart	(working copy)
@@ -1,25 +0,0 @@
-// 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.
-
-#library('ssa');
-
-#import('../leg.dart');
-#import('../native_handler.dart', prefix: 'native');
-#import('../elements/elements.dart');
-#import('../scanner/scannerlib.dart');
-#import('../tree/tree.dart');
-#import('../util/util.dart');
-#import('../util/characters.dart');
-
-#source('bailout.dart');
-#source('builder.dart');
-#source('closure.dart');
-#source('codegen.dart');
-#source('codegen_helpers.dart');
-#source('js_names.dart');
-#source('nodes.dart');
-#source('optimize.dart');
-#source('types.dart');
-#source('validate.dart');
-#source('value_set.dart');