simplify

Shortlog

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2006-07-09 Paul Boddie Added UnaryAdd, UnarySub, Invert.
2006-07-09 Paul Boddie Added From and Import.
2006-07-09 Paul Boddie Added AugAssign, introduced index attributes to LoadTemp/StoreTemp/ReleaseTemp.
2006-07-08 Paul Boddie Added Global, And, Or, Not and made minor fixes.
2006-07-08 Paul Boddie A simplified AST processor.
(0) +60 +100 tip