Barbican, London Cole Porter's musical variation on The Taming of the Shrew gets an exhilarating revival, even if the Line of Duty star's singing is less than sensational Cole Porter's imperishable 1948 musical-within-a-musical follows the Baltimore tryout of a show based on The Taming of the Shrew. Its stars are Lilli and Fred, wrangling exes rekindling their tarnished romance amid smooching hoofers, a ca…