It seems that some device/browser vendors use window.orientation values 0 and 180 to denote the "default" orientation. For iOS devices, and most other smart-phones tested, the default orientation is always "portrait", but in some Android and RIM based tablets, the default orientation is "landscape".
- Modified the orientationchange plugin so that it injects a landscape orientation media query into the document to figure out what the initial orientation is, it then makes adjustments to a portrait_map if necessary, so that we can properly decode the window.orientation value whenever get_orientation() is called.
