auparse_get_field_num - get current field cursor location
unsigned int auparse_get_field_num(auparse_state_t *au);
auparse_get_field_num will retreive the internal library cursors current field
location in the current record. Fields within the same record are numbered
starting from 0. This is generally not needed but there are some cases where
one may want to know the exact field being looked at.
Returns the current field cursor location.