block: reader: *Iterator.Seek: replace binary search with the inline one
block: reader: *Iterator.Seek: replace binary search with the inline one

rentongzhang/goleveldb,FactomProject/goleveldb,no2key/goleveldb,ngaut/goleveldb,chai2010/goleveldb,hustbill/goleveldb,btcsuite/goleveldb,zzl0/goleveldb,trigrass2/goleveldb,syndtr/goleveldb,conseweb/goleveldb