Court OKs Air Canada Restructuring Plan  MONTREAL (Reuters) - A Canadian court approved Air Canada's  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=AC.TO target=/stocks/quickinfo/fullquote"&gt;AC.TO&lt;/A&gt; plan of arrangement with creditors on Monday, clearing  the way for the world's 11th largest airline to emerge from  bankruptcy protection at the end of next month.