own CVS tree will help minimize CVS conflicts.  Maybe not.
Blame Graff for getting me to trim all trailing whitespace.

let the entropy source seed the pseudorandom source from _very_ bad sources like the time and the pid.  Update the dispatcher to always expect success in these cases.

protect isc_entropy_stats() with a lock, and use a static dumpstats() internally when a lock is already held, for debugging.  Add isc_entropy_putdata() which can be used to prime the pool.

before allowing pseudorandom operation.