[NaCl SDK] A bunch of spelling fixes.

native_client_sdk/src/build_tools/manifest_util.py

 # Copyright (c) 2012 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.
 
 import copy
 import hashlib
 import json
 import string
 import sys
 import urllib2
@@ skipping 138 matching lines @@
     if error_on_unknown_keys:
       for key in self:
         if key not in VALID_ARCHIVE_KEYS:
           raise Error('Archive "%s" has invalid attribute "%s"' % (
               host_os, key))
 
   def UpdateVitals(self, revision):
     """Update the size and checksum information for this archive
     based on the content currently at the URL.
 
-    This allows the template mandifest to be maintained without
+    This allows the template manifest to be maintained without
     the need to size and checksums to be present.
     """
     template = string.Template(self['url'])
     self['url'] = template.substitute({'revision': revision})
     from_stream = urllib2.urlopen(self['url'])
     sha1_hash, size = DownloadAndComputeHash(from_stream)
     self['size'] = size
     self['checksum'] = { 'sha1': sha1_hash }
 
   def __getattr__(self, name):
@@ skipping 351 matching lines @@
     local_bundle = self.GetBundle(bundle.name)
     if not local_bundle:
       self.SetBundle(bundle)
     else:
       if not allow_existing:
         raise Error('cannot merge manifest bundle \'%s\', it already exists'
                     % bundle.name)
       local_bundle.MergeWithBundle(bundle)
 
   def MergeManifest(self, manifest):
-    '''Merge another manifest into this manifest, disallowing overiding.
+    '''Merge another manifest into this manifest, disallowing overriding.
 
     Args
       manifest: The manifest to merge.
     '''
     for bundle in manifest.GetBundles():
       self.MergeBundle(bundle, allow_existing=False)
 
   def FilterBundles(self, predicate):
     """Filter the list of bundles by |predicate|.
 
@@ skipping 48 matching lines @@
         return False
 
     return True
 
   def __ne__(self, other):
     return not (self == other)
 
   def GetDataAsString(self):
     """Returns the current JSON manifest object, pretty-printed"""
     return DictToJSON(self._manifest_data)