Namefinder Changes

[Mark G]

Hello, I updated the tools trunk two days ago and stopped getting NER
results. I chatted with Joern and he made a change to the seq codec that
brought everything back to normal. For the benefit of everyone on the dev
list, would it be possible for someone to explain the changes regarding the
sequence codec: its benefits, the differences, and where in the code to
look to see what it is actually doing. Don't need anything elaborate, just
a point of departure for inquiry.
MG