RABAT, April 1 (Reuters) - The Arab Gulf states fund Wessal Capital will invest 6 billion dirhams ($737 million) in tourism infrastructure in the port of Casablanca, the first in a ****** of other similar projects planned by the Gulf states, a statement from the royal cabinet said on Tuesday. Wessal Capital is a joint venture focused on tourism development in Morocco, created by Qatari fund Qatar Holding, the Kuwait Investment Authority's Al Ajial Investments, Abu Dhabi's sovereign wealth fund Aabar , Saudi Investment Fund and Moroccan Fund for tourism Development (FMDT). ($1 = 8. ...