sql/handler.h:
  Fixed (portability) bug. No qualified method names in the class definition.
sql/item_cmpfunc.h:
  Attempt to silence cast warnings on some platforms.
sql/item_subselect.h:
  Attempt to silence cast warnings on some platforms.
sql/set_var.cc:
  Silence warning (missing cast).
sql/spatial.h:
  Attempt to silence cast warnings on some platforms.
sql/sql_cache.cc:
  Silence warning (wrong cast).
sql/sql_lex.h:
  Attempt to silence cast warnings on some platforms.