read osm format longitude and latitude bounds, separate ways and buildings

- read longitude and lattude boundaries
- separate ways ( open ways ) from buildings ( closed )
- save as .imc and .drawing ( raw format ) [ since .imc seems buggy )
- read uncompressed drawing format

java/org/artisanlogiciel/games/minetest/Node.java

@@ -1,2 +1,4 @@
-package org.artisanlogiciel.games.minetest;public class Node {
+package org.artisanlogiciel.games.minetest;
+
+public class Node {
 }