simplify examples
split option file
use new interface of weigh set to compute ess/cess
fix and simplify smc_do
move pf into examples
add pf
rename pf test to pf example
update pf clean rules
pf now is a dependecy of buildexample
pf mpi now output send numbers
add intermediate test targets for pf
cleanup
remove buster config files
add missing headers of options.hhp
add hmm example
slight improvement of hmm
time hmm
remove stopwatch header
time init
avoid repeat check of math functions