Bukkit

Minor update:

• Added water patches to the surface of swamps.
  
• Reduced spacing between islands.
  
• Island spacing can now be set in the config (V1.0-V1.2 used 6, V1.3 used 10, default is 8).
  
• Island starting height can now be set in the config (default is 150).
  
• Island ore rarity, water/lava pool rarity and gravel patch rarity can now be set in the config (1.0 is normal, 2.0 is double, 0.5 is half, etc.).