Nortel Restatement Seen Next Week  OTTAWA (Reuters) - Analysts will wade through the flood of  revisions to financial data that Nortel Networks Corp. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=NT.TO target=/stocks/quickinfo/fullquote"&gt;NT.TO&lt;/A&gt;  is expected to unleash next week looking not so much for  insights into its past, but for clues to its future.