Removed django.utils.itercompat.product() as per deprecation TL.

"""

import collections

import itertools

import sys

import warnings

def is_iterable(x):

    if sys.version_info >= (2, 7):

        return isinstance(x, collections.Iterator)

    return isinstance(x, collections.Iterator) and hasattr(x, '__iter__')

def product(*args, **kwds):

    warnings.warn("django.utils.itercompat.product is deprecated; use the native version instead",

                  DeprecationWarning, stacklevel=2)

    return itertools.product(*args, **kwds)