Disable iTunes hack on 10.13.5 and newer

Removed Sandy Bridge Gen6Accelerator patch due to better fix in Intel…

…GraphicsFixup

Reenable iTunes crashfix hack on 10.13.x (since 10.13.4 seems to only…

… reduce crash frequency)

Disable igpu autodetect, since igfx may add a custom frame id later on

1. Fixed a rare crash when IGPU was not renamed

2. Fixed a rare crash when patching AppleGVA for Ivy Bridge/AMD compatibility

Corrected renderer compatibility patch logic

Fix the link in the changelog

Autoenabled iTunes crash workaround in 10.13 with properly configured…

… Ivy+ IGPU

Added temporary process whitelist for 10.13 SKL/KBL & NVIDIA (`shikig…

…va=12`)

Added High Sierra installer detection