By Ali Hankir and Mohamed AzakirBEIRUT, June 25 (Reuters) - A long-awaited ceasefire has brought relative calm to Lebanon, but it hasn't brought peace of mind to Hussein Merhi. He is among tens of thousands who remain displaced because their homes were destroyed in Israeli strikes or their hometowns fall within a swathe of the south occupied by Israel's military — or, as in his case, both.