Increase item_t's flags to 16-bit
Increase item_t's flags to 16-bit

duncanmortimer/ledger,paulbdavis/ledger,duncanmortimer/ledger,ledger/ledger,paulbdavis/ledger,ledger/ledger,afh/ledger,afh/ledger,paulbdavis/ledger,afh/ledger,jwakely/ledger,duncanmortimer/ledger,ledger/ledger,paulbdavis/ledger,duncanmortimer/ledger,paulbdavis/ledger,paulbdavis/ledger,afh/ledger,afh/ledger,jwakely/ledger,jwakely/ledger,jwakely/ledger,ledger/ledger,duncanmortimer/ledger,paulbdavis/ledger,ledger/ledger,jwakely/ledger,duncanmortimer/ledger,duncanmortimer/ledger,jwakely/ledger,jwakely/ledger