polyself weapon attack (trunk only)

From the newsgroup:  hero poly'd into various monster forms would be
incapable of turning a target to stone when wielding a cockatrice corpse.
Monster forms with a claw attack as their very first attack (second for
incubus and sucubus, handled as a special case) would have that be
converted into a weapon attack.  But some monster forms start with bite
attacks and have their claw attacks later; a hero poly'd into such form
wouldn't use his/her wielded weapon.

     This fixes that, but it's actually academic (or about to become so).
The only monster capable of wielding a weapon which would then be ignored
was jabberwock, and I think leaving NOHANDS off the jabberwock definition
is a bug in itself (next patch...).

doc/fixes35.0

@@ -374,6 +374,8 @@ for poly'd hero hiding on ceiling, attack by sea monsters won't move them
 for poly'd hero hiding on ceiling, attack by long worm might fill hero's
 	destination with worm's tail, so double check and maybe choose again
 when shop prices are adjusted, handle roundoff (integer truncation) better
+for hero poly'd into a monster form that lacks a weapon attack but has a claw
+	attack, use wielded weapon even when claw attack isn't the very first
 
 
 Platform- and/or Interface-Specific Fixes