Add code to automatically svn cleanup during svn update.

gclient_scm.py

 # Copyright (c) 2010 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Gclient-specific SCM-specific operations."""
 
 import logging
 import os
 import posixpath
 import re
@@ skipping 734 matching lines @@
       return
 
     # Get the existing scm url and the revision number of the current checkout.
     from_info = scm.SVN.CaptureInfo(os.path.join(checkout_path, '.'), '.')
     if not from_info:
       raise gclient_utils.Error("Can't update/checkout %r if an unversioned "
                                 "directory is present. Delete the directory "
                                 "and try again." %
                                 checkout_path)
 
+    # Look for locked directories.
+    dir_info = scm.SVN.CaptureStatus(os.path.join(checkout_path, '.'))
+    if [True for d in dir_info if d[0][2] == 'L' and d[1] == checkout_path]:
+      # The current directory is locked, clean it up.
+      scm.SVN.Run(['cleanup'], checkout_path)
+
     if options.manually_grab_svn_rev:
       # Retrieve the current HEAD version because svn is slow at null updates.
       if not revision:
         from_info_live = scm.SVN.CaptureInfo(from_info['URL'], '.')
         revision = str(from_info_live['Revision'])
         rev_str = ' at %s' % revision
 
     if from_info['URL'] != base_url:
       to_info = scm.SVN.CaptureInfo(url, '.')
       if not to_info.get('Repository Root') or not to_info.get('UUID'):
@@ skipping 163 matching lines @@
     command should be a list of strings that represents an svn command.
 
     This method returns a new list to be used as a command."""
     new_command = command[:]
     if revision:
       new_command.extend(['--revision', str(revision).strip()])
     # --force was added to 'svn update' in svn 1.5.
     if options.force and scm.SVN.AssertVersion("1.5")[0]:
       new_command.append('--force')
     return new_command