Extracted/Tweaked Datatyping "foundation" document

Per my proposal regarding the partitioning of datatyping discussion
documentation, attached is a revised/truncated version of Sergey's
sections 1-3 which I think could serve as an expression of the
common understanding/agreement, at present, regarding datatyping
of literals.

My changes are in red.

Regards,

Patrick

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Patrick Stickler              Phone: +358 50 483 9453
Senior Research Scientist     Fax:   +358 7180 35409
Nokia Research Center         Email: patrick.stickler@nokia.com