Correctly translate terrain2 height values to world space (height grid Y axis is inverted relative to world space); avoid self-shadowing artifacts
Correctly translate terrain2 height values to world space (height grid Y axis is inverted relative to world space); avoid self-shadowing artifacts

git-svn-id: 28d9401aa571d5108e51b194aae6f24ca5964c06@30297 8cc4aa7f-3514-0410-904f-f2cc9021211c

crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS,crystalspace/CS