* Enable 'Accurate Multiplication' by default.
* Move 'Disk Shader Cache' to the 'Advanced' tab
* Prevent enabling 'Disk Shader Cache' when 'Enable Hardware Shader' or 'Accurate Multiplication' is disabled.
* Do not load 'Disk Shader Cache' when 'Accurate Multiplication' is disabled.
* Add a tooltip for 'Disk Shader Cache'.