.equal() should convert mock._CallList instances to lists

[clarete]

Otherwise, the user has to do that all the time to avoid the following error:

Here's a basic test case

import mock

def test_equals_handles_mock_call_list():
    ".equal() Should convert mock._CallList instances to lists"

    # Given the following mocked callback
    callback = mock.Mock()

    # When I call the callback with a few parameters twice
    callback(a=1, b=2)
    callback(a=3, b=4)

    # Then I see I can compare the call list without manually
    # converting anything
    callback.call_args_list.should.equal([
        mock.call(a=1, b=2),
        mock.call(a=3, b=4),
    ])