accuracy fxns now better reflect testing process
setting more E-codes to P-codes from PUF
removed write-out duplicates and added more vars to be written out
made mis_matching records more usable
changed report_accuracy signature to be more usable
updated c19700 calculation
changed _compitem calculation
updated _addamt calculation
got relevant version of SAS code from Dan
replaced all indent tabs with spaces
mismatch fxn now handles absence of mismatches better
fixed calculation of _precrd