Only the other day, I was reporting on revolutionary communists in the Rhodesia of the late 1950s.   One of those alleged revolutionaries, a founder of a non-racial co-operative farm and of rural health clinics, Molly Clutton-Brock, has just died aged 101.   Her obituary is here.   Her late husband, Guy, is the only white Zimbabwean buried at Heroes’ Acre national cemetery, outside Harare.