Big merge from experimental to bleeding edge.

tests/corelib/list_last_test.dart

Index: tests/corelib/list_last_test.dart
diff --git a/tests/corelib/list_first_test.dart b/tests/corelib/list_last_test.dart
similarity index 76%
copy from tests/corelib/list_first_test.dart
copy to tests/corelib/list_last_test.dart
index cdd718be90ee742f5e1a610a03ebca1a280e0129..4d9b53a9adabfee786c4d21fb21bfa423293b116 100644
--- a/tests/corelib/list_first_test.dart
+++ b/tests/corelib/list_last_test.dart
@@ -4,9 +4,9 @@
 
 void test(List list) {
   if (list.isEmpty) {
-    Expect.throws(() => list.first, (e) => e is RangeError);
+    Expect.throws(() => list.last, (e) => e is StateError);
   } else {
-    Expect.equals(list[0], list.first);
+    Expect.equals(list[list.length - 1], list.last);
   }
 }