Fix the "unzipping" typo that's been driving me crazy.

tools/bisect-builds.py

 #!/usr/bin/python
 # 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.
 
 """Snapshot Build Bisect Tool
 
 This script bisects a snapshot archive using binary search. It starts at
 a bad revision (it will try to guess HEAD) and asks for a last known-good
 revision. It will then binary search across this revision range by downloading,
@@ skipping 140 matching lines @@
     sys.stdout.flush()
   try:
     print 'Fetching ' + download_url
     urllib.urlretrieve(download_url, BUILD_ZIP_NAME, _Reporthook)
     print
   except Exception, e:
     print('Could not retrieve the download. Sorry.')
     sys.exit(-1)
 
   # Unzip the file.
-  print 'Unziping ...'
+  print 'Unzipping ...'
   UnzipFilenameToDir(BUILD_ZIP_NAME, os.curdir)
 
   # Tell the system to open the app.
   args = ['--user-data-dir=%s' % profile] + args
   flags = ' '.join(map(pipes.quote, args))
   exe = os.path.join(os.getcwd(), BUILD_DIR_NAME, BUILD_EXE_NAME)
   cmd = '%s %s' % (exe, flags)
   print 'Running %s' % cmd
   os.system(cmd)
 
@@ skipping 119 matching lines @@
 
   # We're done. Let the user know the results in an official manner.
   print('You are probably looking for build %d.' % revlist[bad])
   print('CHANGELOG URL:')
   print(CHANGELOG_URL % (last_known_good_rev, revlist[bad]))
   print('Built at revision:')
   print(BUILD_VIEWVC_URL % revlist[bad])
 
 if __name__ == '__main__':
   sys.exit(main())