merge xf86-video-geode 2.11.21, xf86-video-i128 1.4.1,
xf86-video-neomagic 1.3.1, and xf86-video-savage 2.4.0.

fix various errors and warnings with xorg-server 1.20:

- no Error() in scope
- more wakeup/blockhandler ABI changes
- more notify fd API changes
- more xf86CursorResetCursor changes
- lots of char* -> const char*
- fix ati kms config.h now HAVE_XF86_CURSOR_RESET_CURSOR is available
- another xf86GetOS() is removed fix
- OsBlockSIGIO() etc, -> old, but still around API until properly converted
- don't free const char * data owned by some other system

need to include xorg-server.h

initial import of xf86-video-geode-2.11.18

initial import of xf86-video-geode-2.11.15

initial import of xf86-video-geode-2.11.12:
- fixes corrupted overlap issues
- fixes for some particular panels

initial import of xf86-video-geode-2.11.10

initial import of xf86-video-geode-2.11.8