[Patches] utime(path, NULL)

[bwarsaw@python.org]

>>>>> "GvR" == Guido van Rossum <guido@python.org> writes:

    GvR> The logical translation would be to require passing in None
    GvR> rather than leaving out the argument.  The (-1, -1) default
    GvR> is ugly.

I like this better, so I'll make the change and check it in.

-Barry