cosmetic fixes + minor refactoring in TaskRepresenter
fix the classpath issue on YARN/Windows
fix classpath issues on evaluator level, too. better logging + minor
refactoring
more refactoring in the REEFFileNames and its clients; use a single
function to build the classpath for YARN and HDInsight on all platforms
Merge remote-tracking branch 'origin/sergiym_yarn_classpath_fix' into shravanmn_tr_fix
Works on the cluster on a9a