Omnicare Extends Offer for NeighborCare  NEW YORK (Reuters) - Omnicare Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=OCR.N target=/stocks/quickinfo/fullquote"&gt;OCR.N&lt;/A&gt; said on  Wednesday it extended its \$30 a share all cash offer for all  the outstanding shares of NeighborCare Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=NCRX.O target=/stocks/quickinfo/fullquote"&gt;NCRX.O&lt;/A&gt;.