Regenerate pub sources.

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

Index: sdk/lib/_internal/pub_generated/lib/src/exit_codes.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/exit_codes.dart b/sdk/lib/_internal/pub_generated/lib/src/exit_codes.dart
index a498c282a6b691832ab2da6bed7ccf46c35383a2..ebe8e8deab8e584eb14f1a8156bb00fa404634ce 100644
--- a/sdk/lib/_internal/pub_generated/lib/src/exit_codes.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/exit_codes.dart
@@ -1,17 +1,60 @@
+// Copyright (c) 2012, 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.
+
+/// Exit code constants.
+///
+/// From [the BSD sysexits manpage][manpage]. Not every constant here is used,
+/// even though some of the unused ones may be appropriate for errors
+/// encountered by pub.
+///
+/// [manpage]: http://www.freebsd.org/cgi/man.cgi?query=sysexits
 library pub.exit_codes;
+
+/// The command completely successfully.
 const SUCCESS = 0;
+
+/// The command was used incorrectly.
 const USAGE = 64;
+
+/// The input data was incorrect.
 const DATA = 65;
+
+/// An input file did not exist or was unreadable.
 const NO_INPUT = 66;
+
+/// The user specified did not exist.
 const NO_USER = 67;
+
+/// The host specified did not exist.
 const NO_HOST = 68;
+
+/// A service is unavailable.
 const UNAVAILABLE = 69;
+
+/// An internal software error has been detected.
 const SOFTWARE = 70;
+
+/// An operating system error has been detected.
 const OS = 71;
+
+/// Some system file did not exist or was unreadable.
 const OS_FILE = 72;
+
+/// A user-specified output file cannot be created.
 const CANT_CREATE = 73;
+
+/// An error occurred while doing I/O on some file.
 const IO = 74;
+
+/// Temporary failure, indicating something that is not really an error.
 const TEMP_FAIL = 75;
+
+/// The remote system returned something invalid during a protocol exchange.
 const PROTOCOL = 76;
+
+/// The user did not have sufficient permissions.
 const NO_PERM = 77;
+
+/// Something was unconfigured or mis-configured.
 const CONFIG = 78;