Create binstubs for executables when activating a package.

sdk/lib/_internal/pub_generated/lib/src/utils.dart

Index: sdk/lib/_internal/pub_generated/lib/src/utils.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/utils.dart b/sdk/lib/_internal/pub_generated/lib/src/utils.dart
index dcaf04417d560df5efb84f6c588b3bcf6a077584..30ce6c6c57632793815c2e8fea242c16c9c9c1f8 100644
--- a/sdk/lib/_internal/pub_generated/lib/src/utils.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/utils.dart
@@ -102,6 +102,12 @@ String padRight(String source, int length) {
   }
   return result.toString();
 }
+String namedSequence(String name, Iterable iter, [String plural]) {
+  if (iter.length == 1) return "$name ${iter.first}";
+  var sequence = iter.take(iter.length - 1).join(", ") + " and ${iter.last}";
+  if (plural == null) plural = "${name}s";
+  return "$plural $sequence";
+}
 String toSentence(Iterable iter) {
   if (iter.length == 1) return iter.first.toString();
   return iter.take(iter.length - 1).join(", ") + " and ${iter.last}";