Improve diagnostic messages for af10101, af10102, af10103, af10104, af10109, af10110, af10112, af10113#79

Drishti160803 wants to merge 1 commit intosbgn:mastersbgn/libsbgn:masterfrom

Drishti160803:fix-af-er-messagesDrishti160803/libsbgn:fix-af-er-messagesCopy head branch name to clipboard