Fix UUID copy for AMD markers for non-Windows
Fix UUID copy for AMD markers for non-Windows

For non-windows size of unsigned long is 8, so copy the UUID in split
fashion.

baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,baldurk/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,baldurk/renderdoc