Comparison between Image instance and other types fails

[radarhere]

The __eq__ function in Image.py makes no allowances that the comparison object might not be another Image instance.

So

>>> item = Image.new('RGB',(25,25),'#000')
>>> item == None

gives

Image.py, line 578, in __eq__
    a = (self.mode == other.mode)
AttributeError: 'NoneType' object has no attribute 'mode'

[aclark4life]

Got a pull request? Thanks

[radarhere]

Hmm. Apologies for the apparent mess. I'm clearly not as familiar with pull requests as I ought to be.

[hugovk]

@radarhere The PR looks fine. Here's a test: radarhere#1

[radarhere]

Thanks.

[wiredfool]

Closed with #775