[Libosinfo] More device drivers v3

[Zeeshan Ali (Khattak)]

Changes since v2:

* Removed patches regarding driver format.
* Removed API to change driver signing requirement.
* Removed *MUTABLE values from OsinfoDeviceDriverSigningReq and related XML.
* Windows XP's post installation script now disables/enabled driver signing
  before/after installing drivers.
* Additional patch to redirect log Windows XP's post installation script on target disk.