preprocess drift files into their own directory so users of jhc need not have drift instaled.
preprocess drift files into their own directory so users of jhc need not have drift instaled.

darcs-hash:20080210024440-1a7c6-eb2da02ed64d995b34d08d37ae9c95ffeae2910c

jimcrayne/jhc,jimcrayne/jhc,jimcrayne/jhc,jimcrayne/jhc