The items that 0.6.13 requires are now guarded by a version test.
This should allow running fwupd master on more distros that haven't
yet picked up appstream-glib 0.6.13.
We used to do this dance to avoid reading the Option ROM on hardware by default
(some faulty hardware would crash...) but now we're doing the verify update in
the daemon there's no need to split this into two steps.
Fixes: https://github.com/hughsie/fwupd/issues/149
The idea here is that we move a lot of the 'meat' out of fu-main into the
engine. This also lets us simplify a lot of things and ensures the user
authentication is simple and easy to audit.
