Revert MDEV-25292 Atomic CREATE OR REPLACE TABLE

Specifically:

Revert "MDEV-29664 Assertion `!n_mysql_tables_in_use' failed in innobase_close_connection"
This reverts commit ba875e9396.

Revert "MDEV-29620 Assertion `next_insert_id == 0' failed in handler::ha_external_lock"
This reverts commit aa08a7442a.

Revert "MDEV-29628 Memory leak after CREATE OR REPLACE with foreign key"
This reverts commit c579d66ba6.

Revert "MDEV-29609 create_not_windows test fails with different result"
This reverts commit cb583b2f1b.

Revert "MDEV-29544 SIGSEGV in HA_CREATE_INFO::finalize_locked_tables"
This reverts commit dcd66c3814.

Revert "MDEV-28933 CREATE OR REPLACE fails to recreate same constraint name"
This reverts commit cf6c517632.

Revert "MDEV-28933 Moved RENAME_CONSTRAINT_IDS to include/sql_funcs.h"
This reverts commit f1e1c1335b.

Revert "MDEV-28956 Locking is broken if CREATE OR REPLACE fails under LOCK TABLES"
This reverts commit a228ec80e3.

Revert "MDEV-25292 gcol.gcol_bugfixes --ps fix"
This reverts commit 24fff8267d.

Revert "MDEV-25292 Disable atomic replace for slave-generated or-replace"
This reverts commit 2af15914cb.

Revert "MDEV-25292 backup_log improved"
This reverts commit 34398a20b5.

Revert "MDEV-25292 Atomic CREATE OR REPLACE TABLE"
This reverts commit 93c8252f02.

Revert "MDEV-25292 Table_name class for (db, table_name, alias)"
This reverts commit d145dda9c7.

Revert "MDEV-25292 ha_table_exists() cleanup and improvement"
This reverts commit 409b8a86de.

Revert "MDEV-25292 Cleanups"
This reverts commit 595dad83ad.

Revert "MDEV-25292 Refactoring: moved select_field_count into Alter_info."
This reverts commit f02af1d229.

sql/sql_table.h

@@ -27,10 +27,8 @@
 
 class Alter_info;
 class Alter_table_ctx;
-struct Atomic_info;
 class Column_definition;
 class Create_field;
-struct Table_name;
 struct TABLE_LIST;
 class THD;
 struct TABLE;
@@ -96,15 +94,50 @@ uint build_tmptable_filename(THD* thd, char *buff, size_t bufflen);
 bool add_keyword_to_query(THD *thd, String *result, const LEX_CSTRING *keyword,
                           const LEX_CSTRING *add);
 
+/*
+  mysql_create_table_no_lock can be called in one of the following
+  mutually exclusive situations:
+
+  - Just a normal ordinary CREATE TABLE statement that explicitly
+    defines the table structure.
+
+  - CREATE TABLE ... SELECT. It is special, because only in this case,
+    the list of fields is allowed to have duplicates, as long as one of the
+    duplicates comes from the select list, and the other doesn't. For
+    example in
+
+       CREATE TABLE t1 (a int(5) NOT NUL) SELECT b+10 as a FROM t2;
+
+    the list in alter_info->create_list will have two fields `a`.
+
+  - ALTER TABLE, that creates a temporary table #sql-xxx, which will be later
+    renamed to replace the original table.
+
+  - ALTER TABLE as above, but which only modifies the frm file, it only
+    creates an frm file for the #sql-xxx, the table in the engine is not
+    created.
+
+  - Assisted discovery, CREATE TABLE statement without the table structure.
+
+  These situations are distinguished by the following "create table mode"
+  values, where a CREATE ... SELECT is denoted by any non-negative number
+  (which should be the number of fields in the SELECT ... part), and other
+  cases use constants as defined below.
+*/
+#define C_CREATE_SELECT(X)        ((X) > 0 ? (X) : 0)
+#define C_ORDINARY_CREATE         0
+#define C_ALTER_TABLE            -1
+#define C_ALTER_TABLE_FRM_ONLY   -2
+#define C_ASSISTED_DISCOVERY     -3
+
 int mysql_create_table_no_lock(THD *thd,
-                               const LEX_CSTRING *orig_db,
-                               const LEX_CSTRING *orig_table_name,
+                               DDL_LOG_STATE *ddl_log_state,
+                               DDL_LOG_STATE *ddl_log_state_rm,
                                const LEX_CSTRING *db,
                                const LEX_CSTRING *table_name,
                                Table_specification_st *create_info,
                                Alter_info *alter_info, bool *is_trans,
-                               int create_table_mode, TABLE_LIST *table,
-                               LEX_CUSTRING *frm= NULL);
+                               int create_table_mode, TABLE_LIST *table);
 
 handler *mysql_create_frm_image(THD *thd,
                                 const LEX_CSTRING &db,
@@ -138,31 +171,6 @@ bool mysql_compare_tables(TABLE *table,
                           HA_CREATE_INFO *create_info,
                           bool *metadata_equal);
 bool mysql_recreate_table(THD *thd, TABLE_LIST *table_list, bool table_copy);
-/**
-    Parameters for rename_table_and_triggers()
-*/
-struct rename_param
-{
-  LEX_CSTRING old_alias, new_alias;
-  LEX_CUSTRING old_version;
-  handlerton *from_table_hton;
-  int rename_flags; /* FN_FROM_IS_TMP, FN_TO_IS_TMP, etc */
-  rename_param() :
-    from_table_hton(NULL),
-    rename_flags(0) {}
-};
-bool
-rename_table_and_triggers(THD *thd, rename_param *param,
-                          DDL_LOG_STATE *ddl_log_state,
-                          Table_name *ren_table, const LEX_CSTRING *new_db,
-                          bool skip_error, bool *force_if_exists);
-int
-rename_check_preconditions(THD *thd, rename_param *param,
-                           Table_name *ren_table,
-                           const LEX_CSTRING *new_db,
-                           const LEX_CSTRING *new_table_name,
-                           const LEX_CSTRING *new_table_alias,
-                           bool if_exists);
 bool mysql_rename_table(handlerton *base, const LEX_CSTRING *old_db,
                         const LEX_CSTRING *old_name, const LEX_CSTRING *new_db,
                         const LEX_CSTRING *new_name, LEX_CUSTRING *id,