[MERGE] faster iter_changes

[Tom Widmer]

Robert Collins wrote:
> On Thu, 2008-09-18 at 11:01 +0300, Alexander Belchenko wrote:
>> Robert Collins wrote:
>> +cdef extern from "arpa/inet.h":
>> +    unsigned long htonl(unsigned long)
>> +
>> +
>>
>> ^-- I'm not sure arpa is available on Windows.
> 
> Ah. Well I'm sure there is an equivalent, we can abstract that in _dirstate_helper_c.h if needed with a small macro.

htonl is in "Winsock2.h"

Tom