CLEVELAND: Two of the country’s poorest cities are talking about a merger they say could help both, though they may need a sizable boost in taxpayer dollars to make it happen.In Cleveland, officials are looking at development possibilities that exist in neighboring East Cleveland, a place so impoverished that some residents fill their own potholes.In East Cleveland, City Council members had long balked at the idea of dissolving their city.But with no viable solution short of an economic miracle in sight, they agreed last month to pursue annexation without the list of demands — such as continuing to be paid after annexation — the council originally submitted to the dismay of Cleveland officials.“Without a revenue stream, I don’t know how we would exist,” said Thomas Wheeler, president of East Cleveland City Council.