The end year is legally and functionally redundant, and more importantly causes
cherry-pick conflicts when trying to maintain old branches. Use git for history.
We don't actually need either of the things it provides (looking up in source
and built, and converting to an absolute path) so just replace it with
g_build_filename() instead.
This also has the advantage that it does the right thing on Windows.
Redfish is an open industry standard specification and schema that helps enable
simple and secure management of modern scalable platform hardware.
This has only ever been tested using an emulator and not on real hardware.
