old_contents: import os
  import sys
  
  path = os.path.dirname(__file__)+os.path.sep+'python'+str(sys.version_info[0])
  sys.path.insert(0, path)
  del sys.modules['httplib2']
  import httplib2
  
new_contents: import os
  import sys
  
  path = os.path.dirname(__file__)+os.path.sep+'python'+str(sys.version_info[0])
  sys.path.insert(0, path)
  if 'httplib2' in sys.modules:
      del sys.modules['httplib2']
  import httplib2
  
subject: Fix nosetests breakage