- use EngpGetDisplayDriverParameters to get display settings from registry
- update searched display settings with the provided ones (+ add missing SEH2)
- then, search exact mode
User can now change only one display setting, without specifying other ones.
- store the acceleration level in PDEVOBJ
- when searching a pdev, search a pdev with required acceleration level
- disable some functions when not at full acceleration level
(levels 3 and 5 are not implemented)
This will be used (later) to store the list of all enabled display devices.
Add a global variable gpmdev (should really be stored in DISPLAYINFO structure)
Replace global variable gppdevPrimary by pmdev->ppdevGlobal.
