Provide initial module structure to Doxygen.

sql/event_data_objects.cc:
  Add module comments.
sql/event_data_objects.h:
  Add module comments.
sql/event_db_repository.cc:
  Add module comments.
sql/event_db_repository.h:
  Add module comments.
sql/event_queue.cc:
  Add module comments.
sql/event_queue.h:
  Add module comments.
sql/event_scheduler.cc:
  Add module comments.
sql/event_scheduler.h:
  Add module comments.
sql/events.cc:
  Add module comments.
sql/events.h:
  Add module comments.
sql/lock.cc:
  Add module comments.
sql/sp_head.h:
  Add module comments.
sql/sql_base.cc:
  Add module comments.
sql/sql_lex.h:
  Add module comments.
sql/sql_parse.cc:
  Add module comments.
sql/sql_select.cc:
  Add module comments.
sql/sql_yacc.yy:
  Add module comments.

1 files changed, 7 insertions, 0 deletions

diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index cdec96a8526..e15bc1c3137 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -82,6 +82,10 @@ bool Prelock_error_handler::safely_trapped_errors()
   return ((m_handled_errors > 0) && (m_unhandled_errors == 0));
 }
 
+/**
+  @defgroup Data_Dictionary Data Dictionary
+  @{
+*/
 
 TABLE *unused_tables;				/* Used by mysql_test */
 HASH open_cache;				/* Used by mysql_test */
@@ -7802,3 +7806,6 @@ void close_performance_schema_table(THD *thd, Open_tables_state *backup)
   thd->restore_backup_open_tables_state(backup);
 }
 
+/**
+  @} (end of group Data_Dictionary)
+*/