[IronPython] co_name in code objects

[Christian Muirhead]

Hi -

We noticed a small difference between CPython and IronPython:

CPython:

 >>> c = compile("x = 2", "test", "exec")
 >>> c.co_filename
'test'

IronPython 1.0.1

 >>> c = compile("x = 2", "test", "exec")
 >>> c.co_filename
 >>>

(That is, it was None)

It would be handy for us if IP's behaviour matched CPython's here. Can 
you please add a bug for this?

Thanks,
Christian