trunk: BABEL scripts: adding some scripts for lexicon expansion to handle...

trunk: BABEL scripts: adding some scripts for lexicon expansion to handle OOVs, and changes to G.fst preparation to handle probabilities for these (associated changes to run-1-main.sh to come); removing some scripts that should not have been in local/.

git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@3489 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8