New F11 for XO-1.5 build 25

[Chris Ball]

http://wiki.laptop.org/go/F11_for_1.5
http://dev.laptop.org/~cjb/f11-1.5/os25

Compressed image size: 374.32mb (+0.09mb since build 24)

Description of changes in this build:
 * The openchrome X driver was broken in last build, should be fixed now.
 * Added pgf's olpc-kbdshim for brightness control.

Package changes since build 24:

+olpc-kbdshim-6-4.fc11.i586
-xorg-x11-drv-openchrome-0.2.903-12.fc11.i586
+xorg-x11-drv-openchrome-0.2.903-16.fc11.i586