from preamble:

"Change Set:		RelativeZip3-nk
Date:			13 March 2003
Author:			Ned Konz

Yet another tweak for archive extraction. I will include this in a new
version of SARInstaller.

Made relative file extraction work properly on Mac. Prevented endless
recursion on assureExistenceOfPath:. Zurgle now loads on Mac.
"!
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