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/rpl_gtid.cc

@@ -1927,10 +1927,7 @@ slave_connection_state::load(char *slave_request, size_t len)
   for (;;)
   {
     if (!(rec= (uchar *)my_malloc(sizeof(entry), MYF(MY_WME))))
-    {
-      my_error(ER_OUTOFMEMORY, MYF(0), sizeof(*gtid));
       return 1;
-    }
     gtid= &((entry *)rec)->gtid;
     if (gtid_parser_helper(&p, end, gtid))
     {
@@ -2547,10 +2544,7 @@ gtid_waiting::get_entry(uint32 domain_id)
     return e;
 
   if (!(e= (hash_element *)my_malloc(sizeof(*e), MYF(MY_WME))))
-  {
-    my_error(ER_OUTOFMEMORY, MYF(0), sizeof(*e));
     return NULL;
-  }
 
   if (init_queue(&e->queue, 8, offsetof(queue_element, wait_seq_no), 0,
                  cmp_queue_elem, NULL, 1+offsetof(queue_element, queue_idx), 1))