pcre: offsets scanned if start is valid
pcre: moved no offset info calculations to static function
pcre: scanbuf quick skips CLI_OFF_NONE pcres
paradiagm: pcre offsets are determined invalid by scanbuf
pcre: added virname to performance tracking names
pcre subsig offset behavior follows hex substrs
pcre: added rolling option (r) for older (normal pcre) behavior
pcre: adjusted handling of CLI_OFF_ANY based subsigs