Customization stick for XO-1.5

[Daniel Drake]

I wrote a dracut module that can produce an initramfs for a
customization stick. It's based on Michael's code for the
currently-available customization stick. Released in
dracut-modules-olpc-0.3.0.

Build instructions here:
http://wiki.laptop.org/go/Customization_stick_development

We should build and sign one of these before first XO-1.5 OS release.
http://dev.laptop.org/ticket/9738
I can do the building nearer the time, someone else will have to sign
it.

Daniel