Casino stocks in Macau have surged following the announcement of new legislation in the Chinese enclave. A Bloomberg Intelligence gauge of casino shares jumped as much as 12% on Monday, the most in more than six years. Wynn Macau , Sands China and Galaxy Entertainment Group each posted double-digit gains. The favorable news comes after Macau officials announced on Friday that casino licenses in the world’s largest gambling hub would remain at the current six license cap, while their duration will be halved to 10 years from 20, with a possibility to be stretched by another three years. The decision…