Changes

|| Rotation and redraw Image rendering much slower than on Chromium. Drawing of complex patterns on Minefield would sometimes cause centre to "wobble". CPU utilization seems (near) identical on both.|| Was extremely slow on Sept 13 buildMemory observations: Chromium mallocs a large buffer for entire page initially, now running better but still slower than Chromiumwhile Minefield incrementally mallocs as needed. Slowly leaks memory (20MB over 10 minutes)