fix #Q251 - reading engravings while asleep

From a bug report, floating down onto an engraving
due to levitation timeout would yield "You read: <engraving text>" even if
you were asleep at the time.  Random teleport while asleep could produce a
similar result.  The problem was actually a little bigger:  you'd also get
"You see <object> here" if there was an object instead of or in addition to
an engraving.

doc/fixes35.0

@@ -113,6 +113,8 @@ reduced message verbosity when monster with multiple attacks missed wildly
 zapping a never seen wand while blinded won't make the wand a discovery
 zapping an unID'd wand of teleportation at self will discover it (usually)
 zapping unlocking magic at self while punished will remove attached chain
+don't see objects or read engraving when hero changes location (random
+	teleport) or position (levitation timeout) while asleep or fainted
 
 
 Platform- and/or Interface-Specific Fixes

src/pickup.c

@@ -1,4 +1,4 @@
-/*	SCCS Id: @(#)pickup.c	3.5	2005/12/07	*/
+/*	SCCS Id: @(#)pickup.c	3.5	2006/02/03	*/
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -424,6 +424,13 @@ int what;		/* should be a long */
 	struct obj *objchain;
 	int traverse_how;
 
+	/* we might have arrived here while fainted or sleeping, via
+	   random teleport or levitation timeout; if so, skip check_here
+	   and read_engr_at in addition to bypassing autopickup itself
+	   [probably ought to check whether hero is using a cockatrice
+	   corpse for a pillow here... (also at initial faint/sleep)] */
+	if (autopickup && multi < 0 && unconscious()) return 0;
+
 	if (what < 0)		/* pick N of something */
 	    count = -what;
 	else			/* pick anything */