(Reuters) -Tesla Inc Chief Executive Elon Musk said on Saturday that the electric vehicle maker’s total headcount will increase over the next 12 months, but the number of salaried staff should be little changed, backtracking from an email just two days ago saying that job cuts of 10% were needed. “Total headcount will increase, but salaried should be fairly flat,” Musk tweeted https://twitter.com/elonmusk/status/1533176789022957568 in a reply to an unverified Twitter account that made a “prediction” that Tesla’s headcount would increase over the next 12 months. Musk in an email to Tesla execut…