buildcapacity - # of builders

[Doug Reiland]

Thanks for both of you for these details.
By "serialized", I mean non-parallel package builds because of the 
waitrepos.

Can host.capacity be changed on the fly (pop into psql while stuff is 
running)? If not, how well does the system handle a kojid stop with a bunch 
of outstanding work?
    /etc/init.d/kojid stop
    change capacity
    /etc/init.d/kojid start

and outstanding tasks are handled cleanly.