Merge sanja.is.com.ua:/home/bell/mysql/bk/work-simple_in-4.1

into sanja.is.com.ua:/home/bell/mysql/bk/work-all_any-4.1

sql/item.cc

@@ -1693,7 +1693,7 @@ void Item_cache_str::store(Item *item)
     value_buff.copy(*value);
     value= &value_buff;
   }
-  set_charset(&item->collation);
+  collation.set(item->collation);
 }
 double Item_cache_str::val()
 {