viewport_Set_defaults() will setup the given viewport with the correct "full screen" dimensions (so start at 0,0 if statusbars are disabled or 0,8 if they are enabled.)
All screens should keep the statusbar enabled, but if you really want to ignore the user setting you can disbaled it with viewportmanager_set_statusbar(false).
This commit also includes some menu/list viewport cleanups from kugel in FS#9603
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19622 a1c6a512-1295-4272-9138-f99709370657
