pentaho/pentaho-kettle — pull request #877 by mattyb149 (2014-12-17 20:11:01+00:00)
Title: [CLEANUP] Remove import of Drools StringUtils from TextFileOutput

I think this was an IDE picking the wrong import for StringUtils under PDI-11190. To avoid any confusion (and for downstream dependencies not to need Drools), I removed the import and change the code to use Kettle's Const.isEmpty().

@dkincade Per our discuission, can you review and merge? Please and thanks :)