Quick fix for AMD's OpenGL on Windows 8

For whatever reason, the AMD Catalyst Drivers for Windows 8 Consumer Preview are broken when it comes to 64-bit OpenGL; they're missing a registry entry critical to its functionality. Specifically, whenever an application (like Minecraft using Java 64-bit) requests OpenGL access, AMD's atig6pxx.dll kicks in. It then peeks inside HKLM\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0000 and loads the OpenGL component as specified by OpenGLVendorName (64-bit) or OpenGLVendorNameWow (32-bit).

While the bits are there, the 64-bit registry entry is missing completely. But wait, you can add it yourself, though! No reboot needed.