Grabbing some of the head and tail for large bnb-semi files.
Grabbing some of the head and tail for large bnb-semi files.

git-svn-id: 5c5b0dd92016e7ca67cd95892bc6a66dc7a01036@1374 bf801614-116f-4f24-8474-ab90d4dec98d

mgormley/pypipeline,mgormley/pypipeline