ShadowCast bugfix and LinearSpawner
[xpn 2.2465]Imperial Game Engine 2 v43.6.8;
[BugFix] ShadowCast with inactive i_lights;
[New] DoublePlane.imd;
[New] SeedGenerator, Radiant, Planar Types;
[New] SeedGenerator, LinearFillement Types;
[Bug] VideoClip, bad framecaching;
[New] MapManager, 10 level indeep prehabbing;