falling into water while asleep

Try to fix the reported bug of not waking up if sleeping on ice
that gets melted out from under you.  This fixes the straightforward
case but I suspect there are other permutations that it doesn't cover.
Teleporting out of water is now blocked if asleep; waking up occurs
after the chance for that has passed.

doc/fixes34.1

@@ -380,6 +380,7 @@ xorns sink if the drawbridge they're standing on is raised
 applying figurines to an adjacent spot over water does drowning checks
 fix sequencing of Magicbane's hit messages
 avoid buffer overflow from long or too many -s params
+wake up first if trying to crawl out of water while asleep
 
 
 Platform- and/or Interface-Specific Fixes