EDIT - Sorry, the password is correct, just StuffIt Expander didn't recognize the password. Using the command line "unrar" worked as charm.
Nice boot animations :) I specially like the one where the robot hammers Apple :D
I am happy to report that this guide also works for compiling under OS X (tested with 10.8), with this minor tweaks:
Install sed from MacPorts: sudo port install gsed
Edit build/core/Makefile, changing sed for gsed around l...