From the extract of the Court order quoted by you, you received from your employer superannuation, PF and Gratuity benefits. These are definitely to be taken under the head " Salaries". As you have received these amounts as arrears,you will be entitled to rebate u/s 89 of the Income Tax Act, which basically evens out your tax liability across the years, for which the arrears of pay are now received.
Apart from this, you are also entitled to receive " a lump-sum compensation in discharge of your claim in the suit". This amount also has to be paid by the employer only. Though it is a lump-sum compensation, still this amount is payable to you as a result of employer employee relationship and not otherwise. Hence, this amount should also be treated as part of salary.
You can stretch the interpretation of the Court order and the Income Tax Act and try to argue that it is a capital receipt and not a revenue receipt. However, neither your employer nor the Income Tax Department may agree to this interpretation and take the amount as your salary income. You may get into litigation resulting in appeals and counter appeals. I do not suggest this to you considering your age and cost involved. There are no case laws to my knowledge that clearly and unambiguously hold that these are capital receipts.
As the Income tax returns filed now cannot have any attachments, you will not be able to offer any note on your computation of income, claiming that the amount of compensation is a capital receipt on the basis of judicial decisions. In such case, you run the risk of attracting penalty for concealment, if your return is selected for scrutiny and assessed by adding back the amount claimed by you as capital receipt.