from preamble:

"Change Set:		RBUINumberCloseTo
Date:			17 September 2001
Author:			Unknown

Makes all Number subclasses respond to closeTo:

This is required by the RefactoringBrowser (to determine whether two
methods are equivalent, we must check their literals are, well, close.
Obvious, isn't it?)

This code was in the bundle from BobH.

Daniel Vainsencher"!
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