EG/HM: Removed HashSetLinear
EG/HM: Rewrite multilucene with simple KEY's (as int, iso long hashes)
EG/HM: New data with '__key__' iso joinhash
EG/HM: Removed fieldTypeForLong
EG/HM: TermNumerator
EG/HM: numerateTerm for prefix KEY_PREFIX ('__key__')