Imported bsphere.c, mostly ifdef'd out for now

source/blender/blenkernel/CMakeLists.txt

@@ -81,6 +81,7 @@ set(SRC
 	intern/boids.c
 	intern/booleanops_mesh.c
 	intern/brush.c
+	intern/bsphere.c
 	intern/bullet.c
 	intern/bvhutils.c
 	intern/cdderivedmesh.c

source/blender/blenkernel/intern/customdata.c

@@ -811,7 +811,7 @@ static void layerDefault_skin(void *data, int count)
 	int i;
 	
 	for(i = 0; i < count; i++) {
-		n[i].radius = 1;
+		n[i].radius = 0.25;
 	}
 }