Playwright David Hare declared 'a worthy winner' of prize established by English PEN to celebrate the late Harold PinterFrom the privatisation of the railways to the invasion of Iraq, the banking crisis to the British press, the "unflinching, unswerving" gaze which radical playwright David Hare has trained upon the world over the last 40 years is to be honoured with the PEN/Pinter prize.Established by writers' organi…