Improved behavior when magic words are said before they're seen.

Note: there is a tiny risk that this could break savefile
compatibility, as I swiped an unused int member in the game structure
and turned it into a bool. int and bool *should* be the same sixe...

tests/magicwords.chk

@@ -67,7 +67,7 @@ OK
 
 > say fum
 
-What's the matter, can't you read?  Now you'd best start over.
+Well, that was remarkably pointless!
 
 > z
 

tests/newfilter

@@ -6,5 +6,6 @@ sed \
     -e '/bridge now spans the fissure/s//bridge spans the fissure/' \
     -e '/ground/s//surface/' \
     -e '/floor/s//surface/' \
+    -e "/Well, that was remarkably pointless!/s//What's the matter, can't you read?  Now you'd best start over./" \
 
 # end