vulkan API fixes

- Fix for texture barriers
- vulkan: Rework texture cache handling of depth surfaces
- Support for scaled depth blit using overlay pass
- Support proper readback of D24S8 in both D32F_S8 and D24U_S8 variants
- Optimize the depth conversion routines with SSE
- vulkan: Replace slow single element copy with std::memcpy
- Check heap status before attempting blit operations
- Bump guard size on upload buffer as well

rpcs3/Emu/RSX/GL/GLHelpers.cpp

@@ -35,10 +35,8 @@ namespace gl
 		switch (type)
 		{
 		case GL_DEBUG_TYPE_ERROR:
-		{
 			LOG_ERROR(RSX, "%s", message);
 			return;
-		}
 		default:
 			LOG_WARNING(RSX, "%s", message);
 			return;