U659 - "destroy" manes

Nethack's manes are based on AD&D manes which are in turn based on the
manes of Roman legend.  They are supposed to be spirits of the dead.
To that end, added them to the nonliving() macro.  The biggest behavioral
change is that death spells no longer effect them, which does technically
make them a bit tougher but also makes sense.  Also, they're so wimpy, it's
hard to believe anyone would use a death/disintegration on them anyway.

doc/fixes34.3

@@ -27,6 +27,7 @@ it was inappropriate to have a ghost "appear" in desecrated temple when
 	you were blind and without telepathy
 accept wish for "grey spell book" not just "grey spellbook"
 do not double credit when putting gold into an unpaid container
+manes are nonliving
 
 
 Platform- and/or Interface-Specific Fixes

include/mondata.h

@@ -162,7 +162,8 @@
 				 (ptr) == &mons[PM_MASTER_MIND_FLAYER])
 
 #define nonliving(ptr)		(is_golem(ptr) || is_undead(ptr) || \
-				 (ptr)->mlet == S_VORTEX)
+				 (ptr)->mlet == S_VORTEX || \
+				 (ptr) == &mons[PM_MANES])
 
 /* Used for conduct with corpses, tins, and digestion attacks */
 /* G_NOCORPSE monsters might still be swallowed as a purple worm */