need hands to throw

From the newsgroup:  slash'em lychanthrope character could throw
while in wolf form.  That came straight from nethack; any animal capable
of manipulating an object--possibly with its mouth--could throw things.
Now hands are required.  This doesn't require free hands, although it
probably should; it's kind of tough to imagine making a competent throw
while your hands are stuck to a cursed two-handed weapon.

doc/fixes34.4

@@ -293,6 +293,7 @@ monster killed in midst of multi-shot volley throwing/shooting might cause
 can't arm bear traps or land mines on Planes of Air or Water
 statues that "come to life" when trap activates shouldn't start out sleeping
 shopkeepers and priests wouldn't step on graves put in their rooms by bones
+can't throw if poly'd into form which lacks hands
 
 
 Platform- and/or Interface-Specific Fixes