Win32 UI improvements: Improve the Emulation menu by consolidating down the sound, threading, CPU modes, and GPU modes into pop-out menus.
Eliminate most of the popup menus as per Henrik's request, and fix a minor bug with AT3+ in NewUI.
Fix some text.
Adjust rendering options position slightly.
Merge pull request #3206 from thedax/UIImprovements

Improve the Win32 UI