polyself weapon drop feedback

Don't say "you must drop your weapon" when it doesn't actually get
dropped.  And make "weapon" be more specific, comparable to the handing
for slippery fingers.

src/polyself.c

@@ -722,6 +722,8 @@ drop_weapon(alone)
 int alone;
 {
     struct obj *otmp;
+    const char *what, *which, *whichtoo;
+    boolean candropwep, candropswapwep;
 
     if (uwep) {
 	/* !alone check below is currently superfluous but in the
@@ -729,16 +731,29 @@ int alone;
 	 * wear gloves but can wield weapons
 	 */
 	if (!alone || cantwield(youmonst.data)) {
-	    if (alone) You("find you must drop your weapon%s!",
+	    candropwep = canletgo(uwep, "");
-			   u.twoweap ? "s" : "");
+	    candropswapwep = !u.twoweap || canletgo(uswapwep, "");
+	    if (alone) {
+		what = (candropwep && candropswapwep) ? "drop" : "release";
+		which = is_sword(uwep) ? "sword" : weapon_descr(uwep);
+		if (u.twoweap) {
+		    whichtoo = is_sword(uswapwep) ? "sword" :
+				weapon_descr(uswapwep);
+		    if (strcmp(which, whichtoo)) which = "weapon";
+		}
+		if (uwep->quan != 1L || u.twoweap) which = makeplural(which);
+
+		You("find you must %s %s %s!", what,
+		    the_your[!!strncmp(which, "corpse", 6)], which);
+	    }
 	    if (u.twoweap) {
 		otmp = uswapwep;
 		uswapwepgone();
-		if (canletgo(otmp, "")) dropx(otmp);
+		if (candropswapwep) dropx(otmp);
 	    }
 	    otmp = uwep;
 	    uwepgone();
-	    if (canletgo(otmp, "")) dropx(otmp);
+	    if (candropwep) dropx(otmp);
 	    update_inventory();
 	} else if (!could_twoweap(youmonst.data)) {
 	    untwoweapon();

src/weapon.c

@@ -102,7 +102,8 @@ static NEARDATA const char kebabable[] = {
 };
 
 /* weapon's skill category name for use as generalized description of weapon */
-const char *weapon_descr(obj)
+const char *
+weapon_descr(obj)
 struct obj *obj;
 {
     int skill = weapon_type(obj);
@@ -112,7 +113,8 @@ struct obj *obj;
     switch (skill) {
     case P_NONE:
 	/* not a weapon: use item class name; override "food" for corpses */
-	descr = (obj->otyp == CORPSE) ? "corpse" :
+	descr = (obj->otyp == CORPSE || obj->otyp == TIN || obj->otyp == EGG) ?
+		OBJ_NAME(objects[obj->otyp]) :
 		def_oc_syms[(int)obj->oclass].name;
 	break;
     case P_SLING: