Relicense: GPLv3 to GPLv3-or-later.

If the FSF turns evil, it's at least no worse than BSD.
Add make-provisioner.

Inputs: a Fedora version, exactly one language with a script to be run
on the guest, any number of additional languages, and exactly one tree
of files to bundle (which the aforementioned script MUST be contained
in.)

Output: a self-extracting shell script that installs the named
languages, then launches the designated script.