Motorola to Build Cell Phones Into Ski Jackets  CHICAGO (Reuters) - Motorola Inc. &lt;A HREF="http://www.reuters.co.uk/financeQuoteLookup.jhtml?ticker=MOT.N qtype=sym infotype=info qcat=news"&gt;MOT.N&lt;/A&gt; said it will  unveil plans this week for a line of outerwear that uses  interactive cell phone and portable music technology in  snowboarding jackets, in a bid to win over twentysomethings.