Army: May Not Withhold Halliburton Money  WASHINGTON (Reuters) - The U.S. Army on Tuesday appeared to  reverse a decision to stop paying a portion of Halliburton  Co.'s &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=HAL.N target=/stocks/quickinfo/fullquote"&gt;HAL.N&lt;/A&gt; bills in Iraq and gave the company more time to  resolve a billing dispute.