mod: screen rotation implemented by ioctl

Now you get a instance rotate :) With only one bug.
I have to restore to previous rotation state of the
native system after exists. Because the native system
does poll the new rotation state that changed by ioctl.

Currently, I don't know how to force the native system
to detect the changes.

reader.lua

@@ -114,6 +114,7 @@ fb = einkfb.open("/dev/fb0")
 width, height = fb:getSize()
 -- read current rotation mode
 Screen:updateRotationMode()
+origin_rotation_mode = Screen.cur_rotation_mode
 
 -- set up reader's setting: font
 reader_settings = DocSettings:open(".reader")
@@ -158,6 +159,10 @@ end
 reader_settings:savesetting("cfont", FontChooser.cfont)
 reader_settings:close()
 
+-- @TODO dirty workaround, find a way to force native system poll
+-- screen orientation and upside down mode 09.03 2012
+fb:setOrientation(origin_rotation_mode)
+
 input.closeAll()
 --os.execute('test -e /proc/keypad && echo "send '..KEY_HOME..'" > /proc/keypad ')
 if optarg["d"] ~= "emu" then