New Brightness kext, IntelBacklight.kext

Since 10.11 broke ACPI access to the backlight registers, the new version of ACPIBacklight.kext goes direct to the hardware instead of calling ACPI methods _BQC, _BCM to get/set brightness. It depends on the patch being used (how XOPT is set), of course,... because there are brightness patches that always must go through ACPI. But for the normal patches we use, it will go direct to the hardware when they are detected.

Since ACPI is not really involved (except for configuration), I...

New Brightness kext, IntelBacklight.kext