Upscaled Loading Screens file

Upscaled versions of loading screens for S.T.L.A.K.E.R. Clear Sky. They now have twice the resolution of original screens (512x256 → 1024x512).
JPG images are also included for detailed inspection in "/JPG_Upscaled".

Make backups beforehand!!!

Note: I've also upscaled the unused loading screens (intro_agroprom2.dds, intro_escape2.dds, intro_hospital.dds, intro_hospital2.dds,
intro_katacomb2.dds, intro_limansk2.dds, intro_limansk3.dds, intro_marsh2.dds, intro_military2.dds, intro_stancia_22.dds) so you can enjoy different official upscaled loading screens.