Fix leaky pipes (water flow). Fixes BUKKIT-3085

(Also, fix mistranslation for VehicleBlockCollisionEvent)

src/main/java/net/minecraft/server/BlockFlowing.java

@@ -134,7 +134,7 @@ public class BlockFlowing extends BlockFluids {
             }
 
             // CraftBukkit start - all four cardinal directions. Do not change the order!
-            BlockFace[] faces = new BlockFace[] { BlockFace.WEST, BlockFace.EAST, BlockFace.SOUTH, BlockFace.NORTH };
+            BlockFace[] faces = new BlockFace[] { BlockFace.WEST, BlockFace.EAST, BlockFace.NORTH, BlockFace.SOUTH };
             int index = 0;
 
             for (BlockFace currentFace : faces) {

src/main/java/net/minecraft/server/Entity.java

@@ -638,9 +638,9 @@ public abstract class Entity {
                 } else if (d6 < d0) {
                     block = block.getRelative(BlockFace.WEST);
                 } else if (d8 > d2) {
-                    block = block.getRelative(BlockFace.NORTH);
-                } else if (d8 < d2) {
                     block = block.getRelative(BlockFace.SOUTH);
+                } else if (d8 < d2) {
+                    block = block.getRelative(BlockFace.NORTH);
                 }
 
                 VehicleBlockCollisionEvent event = new VehicleBlockCollisionEvent(vehicle, block);