* Removed old options from train script
* Added error code for feature index
* Removing misguided constant-setting for special POS tags
* Propagating error down to calling function
* Starting first word on stack again as it didnt seem to hurt anything
* Fixed repair bug in l_cost, repeated pos tag/label fixes from upstream (had no net connection) and tweaked break_tie for Lower
* Fixed very minor merge conflict
* Added error propagation to hashes header