--with-embedded-privilege-control options". One more (hopefully last) build
failure which was introduced during work on WL#2787 "Add view definer/owner
to the view definition..."


libmysqld/lib_sql.cc:
  create_embedded_thd()/check_embedded_connection():
    Several security related THD members (user, host, ip, priv_user, ...) have
    moved to the Security_context class. New THD::security_ctx member points to
    active security context.
sql/sql_acl.cc:
  acl_getroot():
    Updated function description to refelect the fact that THD::user/host/ip/...
    members were moved to separate Security_context class.
sql/sql_parse.cc:
  check_user():
    Updated function description to refelect the fact that THD::user/host/ip/...
    members were moved to separate Security_context class.