revert

"
  revision-id: sanja@askmonty.org-20110511110948-4kdevwzomvk56y1w
  committer: sanja@askmonty.org
  branch nick: work-maria-5.1-CREATE-merge
  timestamp: Wed 2011-05-11 14:09:48 +0300
    Bugfix: New table creation/renaming block added if old encoded table present
"
the old behavior was less inconsistent than the new one.
In the new one the error message was sometimes different (under LOCK TABLES e.g.),
and there were race conditions (if this CREATE happened when a concurrent ALTER
has renamed the old table away but haven't put the new table in place)

The old one was like "(when using old table names) for DML #mysql50# prefix
is optional, for DDL it's required".

sql/sql_table.h

@@ -131,9 +131,6 @@ uint build_table_filename(char *buff, size_t bufflen, const char *db,
                           const char *table, const char *ext, uint flags);
 uint build_table_shadow_filename(char *buff, size_t bufflen,
                                  ALTER_PARTITION_PARAM_TYPE *lpt);
-bool check_table_file_presence(char *old_path, char *path, const char *db,
-                               const char *table_name, const char *alias,
-                               bool issue_error);
 bool mysql_create_table(THD *thd, TABLE_LIST *create_table,
                         HA_CREATE_INFO *create_info,
                         Alter_info *alter_info);