Patch from Chris Shoemaker to fix one use of price source where

[David Hampton]

Log Message:
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Patch from Chris Shoemaker to fix one use of price source where
exchange-fn was needed.  Added lots of comments, clarify some
explanations, documented some bugs.

Tags:
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gnucash-gnome2-dev

Modified Files:
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    gnucash:
        ChangeLog
    gnucash/src/report/report-system:
        html-acct-table.scm