Adds support for inventory-specific stack_limit parameter when defining an inventory. (in .infos or actor.body table.
This affects addObject, removeObject, sortInven, wearObject, pickupFloor, dropFloor,
Improves object stacking functions to handle a specified number to unstack/stack.

Fixed a bug when inspecting actor inventories in debug mode.
Fixed a shore bug when buying stacks of objects.

updated mod.Actor.doWear doTakeoff and doDrop functions
Player can drop partial stacks.
Updated party transfer dialog.