work on WL#2787 "Add view definer/owner to the view definition (.frm) to check
privileges on used tables and stored routines when using a VIEW."
(aka bug #13402 "Windows VS 2003 Compiler error")


sql/mysqld.cc:
  handle_connections_namedpipes():
    THD::host member has moved to the Security_context class.
    New THD::security_ctx member points to active security context.