Further expand/update SMPng text:

• Mention KSE 1:1 and M:N threading as occuring in parallel, allowing applications to take advantage of parallelism.

• Mention WITNESS.

• Put in a specific recognition of BSD/OS-BSDi contributions early in the project.

• Since a lot of the development work is done, focus less on the project management approach (especially since things have diverged a lot from what was discussed).

• Point at the Netperf cluster.