Added valexpr vars for accessing item position
Added valexpr vars for accessing item position

 - filename
 - beg_line
 - beg_pos
 - end_line
 - end_pos

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