Before-the Bell; Rouse Co. Shares Jump  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=RSE.N target=/stocks/quickinfo/fullquote"&gt;RSE.N&lt;/A&gt; jumped before the bell after General Growth  Properties Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=GGP.N target=/stocks/quickinfo/fullquote"&gt;GGP.N&lt;/A&gt;, the No. 2 U.S. shopping mall owner, on  Friday said it would buy Rouse for \$7.2 billion.