Add a param to newcham() to let it print "The oldmon turns into a newmon!"
rather than always printing this externally. Should ensure a good ordering
of the messages. Also put some special name handling in one place and
catch a couple cases where "saddled" was printed, resulting in funny messages.
Can't push boulders through iron bars; traps can't roll such through either;
likewise for objects thrown by monsters.
Thrown objects susceptible to breaking might do so when they hit iron bars.
Assorted monsters can pass through iron bars; ditto for polymorphed character.
Attempting to dig iron bars will wake nearby monsters instead of yielding
"you swing your pick-axe through thin air".
Autodig won't accept iron bars as candidate location.
Not using FDECL to declare the prototype for dogmove.c:can_reach_food()
causes the Digital UNIX C compiler to throw a prototype mismatch error
when compiling dogmove.c.
