Changed database, tablename and alias to be LEX_CSTRING

This was done in, among other things:
- thd->db and thd->db_length
- TABLE_LIST tablename, db, alias and schema_name
- Audit plugin database name
- lex->db
- All db and table names in Alter_table_ctx
- st_select_lex db

Other things:
- Changed a lot of functions to take const LEX_CSTRING* as argument
  for db, table_name and alias. See init_one_table() as an example.
- Changed some function arguments from LEX_CSTRING to const LEX_CSTRING
- Changed some lists from LEX_STRING to LEX_CSTRING
- threads_mysql.result changed because process list_db wasn't always
  correctly updated
- New append_identifier() function that takes LEX_CSTRING* as arguments
- Added new element tmp_buff to Alter_table_ctx to separate temp name
  handling from temporary space
- Ensure we store the length after my_casedn_str() of table/db names
- Removed not used version of rename_table_in_stat_tables()
- Changed Natural_join_column::table_name and db_name() to never return
  NULL (used for print)
- thd->get_db() now returns db as a printable string (thd->db.str or "")

1 files changed, 6 insertions, 5 deletions

diff --git a/sql/semisync_master.cc b/sql/semisync_master.cc
index 99d8b75ece8..5e83847edf9 100644
--- a/sql/semisync_master.cc
+++ b/sql/semisync_master.cc
@@ -755,10 +755,10 @@ int Repl_semi_sync_master::dump_start(THD* thd,
   add_slave();
   report_reply_binlog(thd->variables.server_id,
                       log_file + dirname_length(log_file), log_pos);
-  sql_print_information("Start semi-sync binlog_dump to slave (server_id: %d), "
-                        "pos(%s, %lu",
-                        thd->variables.server_id, log_file,
-                        (unsigned long)log_pos);
+  sql_print_information("Start semi-sync binlog_dump to slave "
+                        "(server_id: %ld), pos(%s, %lu)",
+                        (long) thd->variables.server_id, log_file,
+                        (ulong) log_pos);
 
   return 0;
 }
@@ -768,7 +768,8 @@ void Repl_semi_sync_master::dump_end(THD* thd)
   if (!thd->semi_sync_slave)
     return;
 
-  sql_print_information("Stop semi-sync binlog_dump to slave (server_id: %d)", thd->variables.server_id);
+  sql_print_information("Stop semi-sync binlog_dump to slave (server_id: %ld)",
+                        (long) thd->variables.server_id);
 
   remove_slave();
   ack_receiver.remove_slave(thd);