Eliminating compiler warnings in the sql/ directory.

sql/log.cc:
  Eliminating some warning from incompatible arguments to DBUG_PRINT().
sql/log_event.cc:
  Eliminating unused auto variable.
sql/sql_insert.cc:
  Eliminating some warning from incompatible arguments to DBUG_PRINT().

sql/log.cc

@@ -138,8 +138,8 @@ public:
    */
   void truncate(my_off_t pos)
   {
-    DBUG_PRINT("info", ("truncating to position %ld", pos));
-    DBUG_PRINT("info", ("before_stmt_pos=%lu", (void*) pos));
+    DBUG_PRINT("info", ("truncating to position %lu", (ulong) pos));
+    DBUG_PRINT("info", ("before_stmt_pos=%lu", (ulong) pos));
     delete pending();
     set_pending(0);
     reinit_io_cache(&trans_log, WRITE_CACHE, pos, 0, 0);
@@ -3466,10 +3466,10 @@ int THD::binlog_flush_transaction_cache()
 {
   DBUG_ENTER("binlog_flush_transaction_cache");
   binlog_trx_data *trx_data= (binlog_trx_data*) ha_data[binlog_hton->slot];
-  DBUG_PRINT("enter", ("trx_data=0x%lu", (void*) trx_data));
+  DBUG_PRINT("enter", ("trx_data=0x%lu", (ulong) trx_data));
   if (trx_data)
-    DBUG_PRINT("enter", ("trx_data->before_stmt_pos=%d",
-                         trx_data->before_stmt_pos));
+    DBUG_PRINT("enter", ("trx_data->before_stmt_pos=%lu",
+                         (ulong) trx_data->before_stmt_pos));
 
   /*
     Write the transaction cache to the binary log.  We don't flush and

sql/log_event.cc

@@ -6402,7 +6402,6 @@ int Table_map_log_event::exec_event(st_relay_log_info *rli)
       inside st_relay_log_info::clear_tables_to_lock() by calling the
       table_def destructor explicitly.
     */
-    const table_def *const def=
     new (&table_list->m_tabledef) table_def(m_coltype, m_colcnt);
     table_list->m_tabledef_valid= TRUE;
 

sql/sql_insert.cc

@@ -3189,7 +3189,7 @@ void select_create::send_error(uint errcode,const char *err)
               thd->current_stmt_binlog_row_based ? "is" : "is NOT"));
   DBUG_PRINT("info",
              ("Current table (at 0x%lu) %s a temporary (or non-existant) table",
-              (void*) table,
+              (ulong) table,
               table && !table->s->tmp_table ? "is NOT" : "is"));
   DBUG_PRINT("info",
              ("Table %s prior to executing this statement",