Release 1.8.7.5

• Fix issue with database handles being left open on sqlite backend. This fixes the main memory leak in MCGalaxy.
• Fix issue with some sqlite connections rarely not being closed, which caused all other database calls to fail (preventing people from joining).
  It is highly recommended you update for these two fixes.
• Added: /os map perbuild
• Added: /map [level] realmowner [player], which allows [player] to use /os on that map.
• Fixed: /deletelvl and /renamelvl not deleting/moving blocks.
• Fixed: Rare case where level blockdb is not auto-saved.
• Fixed: Taskbar icon not disappearing when server is closed.
• Fixed: Getting 'cannot build that far away' when clicking on edge of reach.
• Fixed: Kicker/kickee being incorrectly swapped in IRC kick event handler.
• Improved: LocationChecker sleeps a bit longer when 0 players online, to reduce CPU usage.
• Improved: 2 Scheduler threads (1 for simple tasks, 1 for long running ones), reducing threads created.
• Improved: /binfo now uses relative times, using physics blocks no longer adds an entry to BlockDB.
• Improved: /map [level] output is cleaner.
• Improved: Now rank(s) required is shown when you cannot place a block.
• Improved: Main tab of gui cleaned up to be more visually concise.