[MERGE] versionedfile.py code cleanups

[Ian Clatworthy]

Robert Collins wrote:
> On Thu, 2007-09-20 at 09:42 +1000, Ian Clatworthy wrote:
>> @@ -424,7 +426,8 @@
>>      def annotate(self, version_id):
>>          return list(self.annotate_iter(version_id))
>>  
>> -    def _apply_delta(self, lines, delta):
>> +    @staticmethod
>> +    def _apply_delta(lines, delta):
>>          """Apply delta to lines."""
>>          lines = list(lines)
>>          offset = 0 
> 
> Whats this for? 

It's only used in knit.py as best I can find. It has nothing to do with
the object so it can be a plain function instead of a static method if
you'd prefer.

Ian C.