Some missing  refactorings backported from B+tree branch
Benchmarking of popcnt.
HPPCRT-16: Import some HPPC v60 + Template inlines
HPPCRT-16: Fix template inlines parsing to be more robust
Hash containers spring cleaning : Use more template inlines with HashSets/HashMaps + removed no longer needed wrapAround trick +  fixed erroneous doc for HashSet.add() and HashMap.put()
Fix allocation sizes when creating Hash containers from others
+ Tamplate handling of inlines finally clean
+ Upgrades dependencies again