Move core and coreimpl from corelib/ to lib/core and lib/coreimpl.

corelib/src/implementation/corelib_impl_sources.gypi

Index: corelib/src/implementation/corelib_impl_sources.gypi
diff --git a/corelib/src/implementation/corelib_impl_sources.gypi b/corelib/src/implementation/corelib_impl_sources.gypi
deleted file mode 100644
index 413162e5e38bd11e64aa8c221ffcb141597f4bed..0000000000000000000000000000000000000000
--- a/corelib/src/implementation/corelib_impl_sources.gypi
+++ /dev/null
@@ -1,29 +0,0 @@
-# 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.
-
-{
-  'sources': [
-    'arrays.dart',
-    'collections.dart',
-    'date.dart',
-    'dual_pivot_quicksort.dart',
-    'duration_implementation.dart',
-    'exceptions.dart',
-    'expando.dart',
-    'future_implementation.dart',
-    'hash_map_set.dart',
-    'linked_hash_map.dart',
-    'list.dart',
-    'maps.dart',
-    'object.dart',
-    'options.dart',
-    'print.dart',
-    'queue.dart',
-    'regexp.dart',
-    'splay_tree.dart',
-    'stopwatch_implementation.dart',
-    'string.dart',
-    'string_buffer.dart',
-  ],
-}