Fix server generator when using MC Server 1.3.2.

MCServerChunkGenerator.copyChunkAtPosition copies the compressed chunk data instead of the uncompressed tag. This is because AnvilChunk removes parts of the tag when emulating the older chunk format.

infiniteworld.py

@@ -440,20 +440,17 @@ class MCServerChunkGenerator(object):
         except ChunkNotPresent, e:
             raise ChunkNotPresent("While generating a world in {0} using server {1} ({2!r})".format(tempWorld, self.serverJarFile, e), sys.exc_traceback)
 
-        tempChunk.decompress()
-        tempChunk.unpackChunkData()
-        root_tag = tempChunk.root_tag
+        tempChunk.compress()
+        data = tempChunk.compressedTag
 
         if not level.containsChunk(cx, cz):
             level.createChunk(cx, cz)
 
         chunk = level.getChunk(cx, cz)
-        chunk.decompress()
-        chunk.unpackChunkData()
-        chunk.root_tag = root_tag  # xxx tag swap, could copy blocks and entities and chunk attrs instead?
+        chunk.compress()
+        chunk.compressedTag = data  # xxx tag swap, could copy blocks and entities and chunk attrs instead?
         chunk.dirty = True
 
-        chunk.compress()
         chunk.save()
         chunk.unload()
         tempChunk.compress()