Improving Open Solaris IPv4 forwarding scalability

"Surya project aims to improve IPv4 forwarding path scalability. Improving forwarding scalability enables a Solaris machine to forward a higher number of packets per second to a greater number of destinations described in the forwarding table."

FreeBSD's implementation of Radix tree was chosen.

The Surya project is ready to code review. You can participate in discussion at networking-discuss.

Design doc is available at http://www.opensolaris.org/os/community/networking/surya-design.pdf.