Fixed wrong arguments to printf and related functions

Other things, mainly to get
create_mysqld_error_find_printf_error tool to work:

- Added protection to not include mysqld_error.h twice
- Include "unireg.h" instead of "mysqld_error.h" in server
- Added protection if ER_XX messages are already defined
- Removed wrong calls to my_error(ER_OUTOFMEMORY) as
  my_malloc() and my_alloc will do this automatically
- Added missing %s to ER_DUP_QUERY_NAME
- Removed old and wrong calls to my_strerror() when using
  MY_ERROR_ON_RENAME (wrong merge)
- Fixed deadlock error message from Galera. Before the extra
  information given to ER_LOCK_DEADLOCK was missing because
  ER_LOCK_DEADLOCK doesn't provide any extra information.

I kept #ifdef mysqld_error_find_printf_error_used in sql_acl.h
to make it easy to do this kind of check again in the future

sql/sql_prepare.cc

@@ -2287,10 +2287,8 @@ static int mysql_test_handler_read(Prepared_statement *stmt,
   if (!stmt->is_sql_prepare())
   {
     if (!lex->result && !(lex->result= new (stmt->mem_root) select_send(thd)))
-    {
-      my_error(ER_OUTOFMEMORY, MYF(0), sizeof(select_send));
       DBUG_RETURN(1);
-    }
+
     if (send_prep_stmt(stmt, ha_table->fields.elements) ||
         lex->result->send_result_set_metadata(ha_table->fields, Protocol::SEND_EOF) ||
         thd->protocol->flush())