Changes

Bug 1422: NewtCanvasSWT: Handle case of !OSX && DPIUtil.getScalingFactor() > 1

NewtCanvasSWT.SWTNativeWindow's surfaceSize in pixel units
shall only return scaled-up windowUnits using SWTAccessor.deviceZoomScaleUp(..) for !OSX
and potentially auto scaled-up pixelUnits to passthrough (OSX).

See detailed API doc to NewtCanvasSWT.newtScaleUp(..)