Changes by @emukidid:
- Improve dvd queue read speed when no audio is playing
- Tidy up SD Gecko read code
Changes by @Extrems:
- Fix The Italian Job / Batman: Vengeance
- Replace GXAdjustForOverscan
- Some UI cleanup
- Add screen position setting
- Disable horizontal scale for 1080i
- Other fixes / Refactoring (to video/patches)
- Apply workarounds for GCVideo