[patch] timesince() method is broken when now argument is passed

[pgross@…]

The timesince() method in django.utils.timesince is broken when the now argument is passed. The code

if now:
    t = time.mktime(now)

returns a float, but the code below clearly expects a tuple. Also, the timeuntil() method passes now as a float. Perhaps it should be a tuple or a datetime object.

[Adrian Holovaty]

(In [1579]) Fixed #977 -- Fixed timesince() utility. Thanks, pgross@…