Sort buttons depend directly on available sort methods
[win32] remove "Debug" and "Release" as build solution as we always use "Debug (directX)" and "Release (DirectX)"
Merge pull request #3272 from MartijnKaijser/win32_remove

[win32] cleanup VS2010 build solutions
Merge pull request #3137 from jmbreuer/upstream-sortby

Differentiate between "unsorted" and "unsortable"
gles, fixed, more missing code