Reduces visibility of internal fields/methods

Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.

Reduces the visibility of internal methods to private/protected/default when possible.

src/main/java/appeng/worldgen/MeteoriteWorldGen.java

@@ -111,12 +111,12 @@ public final class MeteoriteWorldGen implements IWorldGenerator
 		return WorldData.instance().spawnData().getNearByMeteorites( w.provider.getDimensionId(), chunkX, chunkZ );
 	}
 
-	class MeteoriteSpawn implements IWorldCallable<Object>
+	private class MeteoriteSpawn implements IWorldCallable<Object>
 	{
 
-		final int x;
-		final int z;
-		final int depth;
+		private final int x;
+		private final int z;
+		private final int depth;
 
 		public MeteoriteSpawn( final int x, final int depth, final int z )
 		{