The website suggest that the devices are "supported", however, it is not
clear what this means and can be read to imply that all of the devices
are expected to work well and upstream will fix issues.
Unfortunately, that is not really the case for all drivers. As such, add
a statement that the quality and supportability of drivers varies widely.
This is a rewrite of the core based on GObject and Gio. This commit
breaks the build in a lot of ways, but basic functionality will start
working again with the next commits.
