Instances of Read on bounded integral types should detect overflow

[Bryan O'Sullivan]

Here's a pet hobbyhorse of mine.

Prelude> read "3333333333333333333333" :: Int
-5527344008095509163
Other fixed-width integral types (those in Data.Int and Data.Word) 
behave similarly.  I'd prefer to see the whole lot throw an overflow 
exception upon detecting a wraparound.

I'll be happy to provide a sample implementation.

        <b
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