help with some improvements to DataFiles

[Si Chen-2]

Hi everybody -

A long time ago we made quite a few changes to Datafiles which were  
never pushed back into OFBiz.  I'd like to contribute them now if  
somebody else could help us with merging our code back into the  
current SVN version of the Datafiles tool.  See http://
issues.apache.org/jira/browse/OFBIZ-108 for a description of the  
features.

Si