Revision 1848009

Improved: OFBizPricatUtil class don't use a org.apache.ofbiz.pricat package
(OFBIZ-10655)

I didn't realized OFBizPricatUtil under org.apache.poi package is a bug 
for OFBiz project at the first sight of this issue. When I tried to think from 
Jacques view as our project SQA, I understood this OFBizPricatUtil may be missed 
during code style check, and this is a major problem :).

Now I moved the OFBizPricatUtil under org.apache.ofbiz.pricat.util package and 
changed two other files accordingly.

I upgraded the implement to match the POI 3.7 used in the OFBiz plugins 
trunk, and I also tested it with POI 4.0.0 and it worked fine.

Thanks: Jacques for pointing out this issue