Start moving non-platform libraries from lib/ to pkg/ .

tests/lib/logging/logging_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.
 
 
 #library('logging_test');
 
-#import('../../../lib/logging/logging.dart');
+#import('../../../pkg/logging/logging.dart');
 #import('../../../lib/unittest/unittest.dart');
 
 main() {
   test('level comparison is a valid comparator', () {
     var level1 = const Level('NOT_REAL1', 253);
     expect(level1 == level1);
     expect(level1 <= level1);
     expect(level1 >= level1);
     expect(level1 < level1, isFalse);
     expect(level1 > level1, isFalse);
@@ skipping 308 matching lines @@
             'SHOUT: 10']));
 
       expect(cMessages, equals([
             // 1 - 7 are lower in the hierarchy
             // 'FINE: 8' is not loggable
             'WARNING: 9',
             'SHOUT: 10']));
     });
   });
 }