a method called lastCall is called for everything contained in that checkpoint
(stats, updaters and monitors). This can be extremely useful
- for stateSavers (see below)
- for monitoring things like rates of success of operators, where what you
are interested in is the final result only.
Added of course a virtual method lastCall that does nothing by default in classes
eoBaseStat, eoBaseSortedStat, eoUpdater and eoMonitor
Added a boolean to control the save of the state in method eoCountedStateSaver::lastCall
so you can ask that the state is saved at final population, whatever happens.
I also added the corresponding constructor to take this into account.
