Integration of VIMAGE support in FreeBSD

This project aims to finalize the work done to make the VIMAGE network stack code production ready. Starting with an update of the previously reviewed work sitting in a perforce repository, incremental patches will be tested, presented to the community, and included in the FreeBSD SVN base system repository head/ branch. The two major areas to focus on will be (i) network stack teardown and ordering, and (ii) plugging the last remaining memory leaks on teardown.

This project was completed in mid-2016. VIMAGE is part of FreeBSD 11. In October 2017 VIMAGE was enabled by default in preparation for FreeBSD 12.0.