Get your taxes done using TurboTax

...in the Turbotax software , when you enter the stock sale data, the word "Inherited" can be entered in the "Date of Acquisition" field without any problem (as long as you spell it right).  It's one of the few text entries allowed in that date field .   

Your second question....I don't know enough about those situations.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*