Create binstubs for executables when activating a package.

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

 library pub.utils;
 import 'dart:async';
 import "dart:convert";
 import 'dart:io';
 @MirrorsUsed(targets: const ['pub.io', 'test_pub'])
 import 'dart:mirrors';
 import "package:crypto/crypto.dart";
 import 'package:path/path.dart' as path;
 import "package:stack_trace/stack_trace.dart";
 import 'exceptions.dart';
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   });
 }
 String padRight(String source, int length) {
   final result = new StringBuffer();
   result.write(source);
   while (result.length < length) {
     result.write(' ');
   }
   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 ${iter.last}";
 }
 String pluralize(String name, int number, {String plural}) {
   if (number == 1) return name;
   if (plural != null) return plural;
   return '${name}s';
 }
 String quoteRegExp(String string) {
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   return buffer.toString();
 }
 void fail(String message, [innerError, StackTrace innerTrace]) {
   if (innerError != null) {
     throw new WrappedException(message, innerError, innerTrace);
   } else {
     throw new ApplicationException(message);
   }
 }
 void dataError(String message) => throw new DataException(message);