Automatically configure Chromebrew

[rainestorme]

Since dev_install (and chromebrew) don't work on older versions of CrOS, I'll package up my install on v118 into a tarball so it can be universally installed on every version. Currently, dev_install and chromebrew are classified as an experiment, but I'll remove it once this feature goes through. This will also allow for the Python interpreter, emerge, and, most importantly, GCC to all function correctly.

Keep in mind that for these to work as root, you have to export LD_LIBRARY_PATH="/usr/local/lib64".