Fix the archive code so that it compiles in a stricter mode.

utils/archive/entry_request.dart

 // 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.
 
 /** The request ids for entry-related messages to send to the C extension. */
 #library("entry_request");
 
 #import("read_request.dart", prefix: "read");
 
 final int _first = read.LAST;
 
 final int CLONE = _first + 1;
 final int FREE = _first + 2;
 final int NEW = _first + 3;
 final int SET_HARDLINK = _first + 4;
 final int SET_PATHNAME = _first + 5;
-final int SET_SOURCEPATH = _first + 6;
-final int SET_SYMLINK = _first + 7;
-final int SET_GID = _first + 8;
-final int SET_UID = _first + 9;
-final int SET_PERM_MASK = _first + 10;
-final int SET_GNAME = _first + 11;
-final int SET_UNAME = _first + 12;
-final int SET_FFLAGS_SET = _first + 13;
-final int SET_FFLAGS_CLEAR = _first + 14;
-final int SET_FFLAGS_TEXT = _first + 15;
-final int SET_FILETYPE_MASK = _first + 16;
-final int SET_MODE_MASK = _first + 17;
-final int SET_SIZE = _first + 18;
-final int SET_DEV = _first + 19;
-final int SET_DEVMAJOR = _first + 20;
-final int SET_DEVMINOR = _first + 21;
-final int SET_INO = _first + 22;
-final int SET_NLINK = _first + 23;
-final int SET_RDEV = _first + 24;
-final int SET_RDEVMAJOR = _first + 25;
-final int SET_RDEVMINOR = _first + 26;
-final int SET_ATIME = _first + 27;
-final int SET_BIRTHTIME = _first + 28;
-final int SET_CTIME = _first + 29;
-final int SET_MTIME = _first + 30;
+final int SET_SYMLINK = _first + 6;
+final int SET_GID = _first + 7;
+final int SET_UID = _first + 8;
+final int SET_PERM_MASK = _first + 9;
+final int SET_GNAME = _first + 10;
+final int SET_UNAME = _first + 11;
+final int SET_FFLAGS_SET = _first + 12;
+final int SET_FFLAGS_CLEAR = _first + 13;
+final int SET_FILETYPE_MASK = _first + 14;
+final int SET_MODE_MASK = _first + 15;
+final int SET_SIZE = _first + 16;
+final int SET_DEV = _first + 17;
+final int SET_DEVMAJOR = _first + 18;
+final int SET_DEVMINOR = _first + 19;
+final int SET_INO = _first + 20;
+final int SET_NLINK = _first + 21;
+final int SET_RDEV = _first + 22;
+final int SET_RDEVMAJOR = _first + 23;
+final int SET_RDEVMINOR = _first + 24;
+final int SET_ATIME = _first + 25;
+final int SET_BIRTHTIME = _first + 26;
+final int SET_CTIME = _first + 27;
+final int SET_MTIME = _first + 28;
 
 final int LAST = SET_MTIME;