first-stage/TRAIN: Make retraining process less confusing
- rename "allScript" to the more meaningful "trainParser"
- remove broken Makefile support for retraining the parser
  This would be nice to resurrect some day but for now, it's confusing

--HG--
rename : first-stage/TRAIN/allScript => first-stage/TRAIN/trainParser
.hgignore: Add SParseval