pending_signals-3.patch: doc nit, the link to Thread.ident doesn't work. The doc should be replaced by something like:
              
   *thread_id* can be read from the :attr:`~threading.Thread.ident` attribute   
   of a :class:`threading.Thread` object.  For example,                         
   ``threading.current_thread().ident`` gives the identifier of the current     
   thread.

... but ident or Thread are not link, I don't know why.