Replace Heritrix 1.14.X libraries with Heritrix 3.X libraries

Download binary copy of Heritrix, and update the contents of lib/heritrix, lib/heritrix-dependencies, and make the appropiate changes to our build.xml <<BR>>The deduplication-X-Y-Z.jar (if we're still using this module for deduplication) needs to be recompiled with the new Heritrix.