Added missing cleanup in sp-security.test.


mysql-test/r/sp-security.result:
  Added clean-up.
mysql-test/t/sp-security.test:
  Added clean-up.
sql/item_func.cc:
  Forgot to wrap things in #ifndef NO_EMBEDDED_ACCESS_CHECKS for the embedded server.
sql/sp_head.cc:
  Forgot to wrap things in #ifndef NO_EMBEDDED_ACCESS_CHECKS for the embedded server.
sql/sp_head.h:
  Forgot to wrap things in #ifndef NO_EMBEDDED_ACCESS_CHECKS for the embedded server.
sql/sql_parse.cc:
  Forgot to wrap things in #ifndef NO_EMBEDDED_ACCESS_CHECKS for the embedded server.