[Csv] Something's fishy w/ Mac line endings...

[Skip Montanaro]

I wrote:

    Looking at the problem a bit, I see this call chain:

        Reader_iternext ->
            PyIter_Next ->
                file_iternext ->
                    readahead_get_line_skip

On second thought, I think the problem may be that we're calling PyIter_Next
at all.  That's probably only supposed to work if the file is opened in text
mode.  Since we expect files to be opened in binary mode, Reader_iternext
should probably be doing its own EOL detection based upon the setting of the
lineterminator.  That's a lot of extra labor, but may be the correct
solution.

Skip