Prep for the next release. In general, do a bunch of cleanups to make the codebase easier for others to grok, and finish up the workload changes.

1. code reformatting everything using uncrustify/clang formatter. formatting is currently all over the place
2. reorg, don't install internal-only headers
3. clean up "bgp" io workload (rename, get rid of unused parameters)
4. clean up the codes-workload-dump utility and related options to work on the network workloads as well
5. update documentation
6. clean up the example program a bit
7. take out some cruft (some unused code in codes-base, in particular)
8. some network workload cleanups (Misbah knows more about this).