Mantis#1207. Thank you, TGlion for a patch that addresses:

Implementation of llModifyLand() and There is a bug on 
permission-check of land-terraforming: x an y-coordinates 
are interchanged on function-call ExternalChecksCanTerraformLand.
Correct: x is west, and y is north. 2) Missing check of 
"Other allow to terraform-flag" (Parcel.ParcelFlags.AllowTerraform)

1 files changed, 2 insertions, 2 deletions

diff --git a/OpenSim/Region/Environment/Modules/World/Terrain/ITerrainPaintableEffect.cs b/OpenSim/Region/Environment/Modules/World/Terrain/ITerrainPaintableEffect.cs
index cf2e58a..e2a9cde 100644
--- a/OpenSim/Region/Environment/Modules/World/Terrain/ITerrainPaintableEffect.cs
+++ b/OpenSim/Region/Environment/Modules/World/Terrain/ITerrainPaintableEffect.cs
@@ -31,6 +31,6 @@ namespace OpenSim.Region.Environment.Modules.World.Terrain
 {
     public interface ITerrainPaintableEffect
     {
-        void PaintEffect(ITerrainChannel map, double x, double y, double strength, double duration);
+        void PaintEffect(ITerrainChannel map, bool[,] allowMask, double x, double y, double z, double strength, double duration);
     }
-}
\ No newline at end of file
+}