Add huet/adverbs.csv and associated scripts

Generated from SL_adverbs.xml (1 June 2014).

Both SL_adverbs.xml and SL_final.xml contain infinitives. But the ones
in the latter are a superset of the ones in the former.
Add huet/final.csv and associated scripts

Generated from SL_final.csv (1 June 2014)

Both SL_adverbs.xml and SL_final.xml contain infinitives. But the ones
in the latter are a superset of the ones in the former.