bank item getters

[dglazier]

For improved performance switch use of strings to integer indices e.g

auto pid = particleBank.getInt("pid", row);
to
auto pid = particleBank.getInt(i_pid, row);

in void EventBuilderFilter::Run(hipo::banklist& banks) const {
...
i_pid = GetBank(banks, b_particle, "REC::Particle").getSchema().getEntryOrder("pid");
...
}