StoreDirect: make index checksum stronger
StoreDirect: make index checksum stronger

olupas/MapDB,sumit784/mapdb,morfeo8marc/mapdb,olupas/MapDB,cocosli/mapdb,ringoluo/mapdb,ffjiao/mapdb,jankotek/mapdb,lamfire/mapdb,jankotek/mapdb,hangum/mapdb,mebigfatguy/mapdb,codeaudit/mapdb,mebigfatguy/mapdb,jankotek/MapDB,binarytemple/mapdb,SleimanJneidi/mapdb,pettermahlen/mapdb,jankotek/MapDB