Allow mixing of different character sets for more SQL functions.
item_func.h:
  Allow mixing of different character sets for more SQL functions..


sql/item_cmpfunc.cc:
  Allow mixing of different character sets for more SQL functions.
sql/item_func.cc:
  Allow mixing of different character sets for more SQL functions.
sql/item_func.h:
  Allow mixing of different character sets for more SQL functions..
sql/item_strfunc.cc:
  Allow mixing of different character sets for more SQL functions.
sql/item.cc:
  Allow mixing of different character sets for more SQL functions.
sql/item.h:
  Allow mixing of different character sets for more SQL functions.
mysql-test/t/ctype_recoding.test:
  Allow mixing of different character sets for more SQL functions.
mysql-test/r/ctype_recoding.result:
  Allow mixing of different character sets for more SQL functions.