Use buildroot to patch buildroot

This makes the patching process more robust. Errors weren't being
caught before.
raspberrypi: add note about controlling terminal
elixir: bump to version 0.13.0
mmccopy: add sudo-mmccopy script

This addresses the problem of it not being easy to run mmccopy under
sudo.
elixir: bump to version v0.13.1
Update make xxx-menuconfig targets to update real config file

I just learned of the Buildroot targets to do this. This saves a
manual copy step.
Initial i3 commit
generix-x86: Add lots of patches to get x11 to work
Turn off tar.gz, etc options that are not needed anymore for i3
Enable evdev to get keyboard and mouse working
Delete patches that have been merged into upstream br
No longer need this patch
Add initial qt5 config
Add qt5base patch to enable opengl
Add qt5 to qt5 configuration
Fix qt5base opengl patch
Update qt5 config now that opengl is available
Fix kernel headers at 3.13
More X11 patches and updates to address 3D accel
Video acceleration almost works

SW rasterizer is enabled, but the Intel DRI driver looks happy from the
kernel to X.