Big merge from experimental to bleeding edge.

utils/pub/validator/license.dart

Index: utils/pub/validator/license.dart
diff --git a/utils/pub/validator/license.dart b/utils/pub/validator/license.dart
index fcc6a49c2f273b12ef12f90fa18217ea61c987bc..066ffbba188b88ea5a11d270ef02289fd92a417c 100644
--- a/utils/pub/validator/license.dart
+++ b/utils/pub/validator/license.dart
@@ -15,10 +15,10 @@ class LicenseValidator extends Validator {
     : super(entrypoint);
 
   Future validate() {
-    return listDir(entrypoint.root.dir).transform((files) {
+    return listDir(entrypoint.root.dir).then((files) {
       var licenseLike = new RegExp(
           r"^([a-zA-Z0-9]+[-_])?(LICENSE|COPYING)(\..*)?$");
-      if (files.map(basename).some(licenseLike.hasMatch)) return;
+      if (files.mappedBy(basename).any(licenseLike.hasMatch)) return;
 
       errors.add(
           "You must have a COPYING or LICENSE file in the root directory.\n"