Lots of changes. In no particular order:

Added an accounting type called "multipleinterval" that makes decisions based on a window of history.

Separated communication from the "system tick".  Now identities can specify a separate inverval for accounting a
nd communication.

Added the ability to do "shadow accounting" when using sample and hold to see what would have happened using reg
ular accounting.

Cleaned up the FPS allocate code a lot (finally)!

Added partition simulation via SIGUSR2 and a partition_set variable in ulogd.conf (mesh only, gossip to come).

Added the option of emulating loss/delay (via netem) on a slice for testing.

Some fixes to sample&hold and a few other small things.