added option to use Ivory.sqe as a query translation module, without any retrieval
working version of new translate_only option and README.clir
added options translate_only, output_path, is_stemming and made some fixes wrt these new options
updated README, added necessary scripts
added new option to specify if collection was stemmed or not, updated reg and integration tests accordingly
merging with remote docfix branch
added new En->Ar vocab files without stemming on Arabic. few fixes when SQE used with Indri.
Merge remote-tracking branch 'origin/docfix' into docfix