[issue1692335] Fix exception pickling: Move initial args assignment to BaseException.__new__

[Sean Reifschneider]

Sean Reifschneider added the comment:

It's not clear to me what the next step is here, does one or more of the
other folks need to provide some input?  Georg: If you are looking for
something from someone, can you assign the ticket to them?

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assignee:  -> georg.brandl
nosy: +jafo

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<http://bugs.python.org/issue1692335>
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