* Allow the layout of the main window to be controlled from the options menu.
* Add an option to use a special character for piles of stuff.
* Describe blindness resistance on an item as an immunity (as it is).
* Ensure that wands, rings, etc., always get the intended pval, etc..
* Allow monsters to summon other monsters at random again.
* Allow recall scrolls, etc., to work properly again.
* Make the Fire Phantom a quest monster again.
* Allow the lists of shops to be browsed when the player is in the wilderness.
* Prevent incorrect object names from being given when selling things.
* Prevent a changing window from being shown in preference to a higher priority
  unchanging one.
* Allow main-ibm.c to be compiled again (thanks to Luc French).
* Use a signal_aux() wrapper to signal() to allow main-sla.c to be compiled.
* Correct various makefiles.
* Clean up some code.