BUG#11749792 and BUG#11763193 are fixed by this worklog.
      
In 'CREATE TABLE ... SELECT' statement, SELECT clause could call store functions
to modify other tables. It made CTS's behavior towards complex and not
understandable. It also caused some binlogging problem. So the behavior modifying
other tables is prohibited in this worklog.
      
In this patch, code is added to check if there is any other table owning WRITE
lock just after all tables have been locked. CREATE TABLE ... SELECT will fail
and print an error immediately if any other table has WRITE lock.
As SELECT ... FOR UPDATE uses WRITE lock too. FOR UPDATE clause is also
prohibited in CREATE TABLE ... SELECT statement.