Fix walkhelper on windows. The ''seen'' dictionary stores paths in canonical form, so the walkhelp must also provide paths in that form, otherwise the changed files are listed twice.

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#!/bin/sh

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mkdir t

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cd t

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hg init

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echo a > a

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hg add a

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hg commit -m "test" -d "0 0"

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hg verify

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hg parents

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hg status

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hg undo

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hg verify

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hg parents

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hg status