More integration with Vampyre Imaging Library, used by default with both FPC and Delp

[DP News-Robot]

We’re moving further with Vampyre Imaging Library integration, to have more features related to image loading and at the same time less code to maintain in Castle Game Engine. We now use Vampyre always, by default, with both FPC and Delphi. This makes our code simpler and more consistent. Note: our castle_base.lpk depends on Vampyre …