Plugins shouldn't construct block entities, rather, they will query them either from the cWorld (while playing), or from cChunkDesc (while generating).
Furnaces now smelt the correct number of items.
Furnaces store their contents in a cItemGrid.
Furnace window is updated with correct items and progressbars.
Furnace recipes now use ticks instead of milliseconds.
Furnaces save and load their state completely, not missing a smelt operation.
Hoppers take items out of furnaces.
Dropped the cSlotAreaDropSpenser class, replaced it with generic cSlotAreaItemGrid
git-svn-id: http://mc-server.googlecode.com/svn/trunk@1601 0a769ca7-a7f5-676a-18bf-c427514a06d6
