Fix for BUG#1345 "SQL Syntax Error in binarylog with DROP TABLES":

it's just backquoting the db's and table's names
when writing DROP TEMPORARY TABLE to the binlog when a connection ends.
A testcase for this.

mysql-test/r/drop_temp_table.result

+reset master;
+create database `drop-temp+table-test`;
+use `drop-temp+table-test`;
+create temporary table `table:name` (a int);
+show binlog events;
+Log_name	Pos	Event_type	Server_id	Orig_log_pos	Info
+master-bin.001	4	Start	1	4	Server ver: VERSION, Binlog ver: 3
+master-bin.001	79	Query	1	79	use test; create database `drop-temp+table-test`
+master-bin.001	152	Query	1	152	use drop-temp+table-test; create temporary table `table:name` (a int)
+master-bin.001	246	Query	1	246	use drop-temp+table-test; DROP /*!40005 TEMPORARY */ TABLE `drop-temp+table-test`.`table:name`
+drop database `drop-temp+table-test`;

mysql-test/t/drop_temp_table.test

+connect (con1,localhost,root,,);
+connect (con2,localhost,root,,);
+connection con1;
+reset master;
+create database `drop-temp+table-test`;
+use `drop-temp+table-test`;
+create temporary table `table:name` (a int);
+disconnect con1;
+connection con2;
+let $VERSION=`select version()`;
+--replace_result $VERSION VERSION
+show binlog events;
+drop database `drop-temp+table-test`;

sql/sql_base.cc

@@ -561,15 +561,13 @@ void close_temporary_tables(THD *thd)
     {
       // skip temporary tables not created directly by the user
       if (table->real_name[0] != '#')
-      {
+	found_user_tables = 1;
       /*
         Here we assume table_cache_key always starts
         with \0 terminated db name
       */
-	found_user_tables = 1;
-      }
-      end = strxmov(end,table->table_cache_key,".",
-		    table->real_name,",", NullS);
+      end = strxmov(end,"`",table->table_cache_key,"`",
+                    ".`",table->real_name,"`,", NullS);
     }
     next=table->next;
     close_temporary(table);