fixed alias drop bug in binlog

fixed skip counter to do the RightThing (TM) when the user messes up.
Still do RightThing when he gets it right.

mysql-test/r/rpl000016.result

@@ -10,7 +10,7 @@ master-bin.003
 Log_name
 master-bin.003
 Master_Host	Master_User	Master_Port	Connect_retry	Log_File	Pos	Slave_Running	Replicate_do_db	Replicate_ignore_db	Last_errno	Last_error	Skip_counter
-127.0.0.1	root	9999	60	master-bin.003	184	Yes			0		0
+127.0.0.1	root	9999	60	master-bin.003	206	Yes			0		0
 m
 34
 65

mysql-test/t/rpl000013.test

@@ -12,7 +12,7 @@ insert into t2 select * from t1;
 connection master1;
 create temporary table t1 (n int);
 insert into t1 values (4),(5);
-insert into t2 select * from t1;
+insert into t2 select * from t1 as t10;
 save_master_pos;
 disconnect master;
 connection slave;

mysql-test/t/rpl000016.test

@@ -28,7 +28,7 @@ select * from t1;
 connection master;
 flush logs;
 drop table if exists t2;
-create table t2(m int not null primary key);
+create table t2(m int not null auto_increment primary key);
 insert into t2 values (34),(67),(123);
 save_master_pos;
 flush logs;
@@ -44,7 +44,8 @@ insert into t2 values(1234);
 #same value on the master
 connection master;
 save_master_pos;
-insert into t2 values(1234);
+set insert_id=1234;
+insert into t2 values(NULL);
 connection slave;
 sync_with_master;
 

sql/slave.cc

@@ -885,7 +885,12 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 	
       mi->inc_pos(event_len);
       flush_master_info(mi);
-      if(slave_skip_counter)
+      if(slave_skip_counter && /* protect against common user error of
+				  setting the counter to 1 instead of 2
+			          while recovering from an failed
+			          auto-increment insert */
+	 	 !(type_code == INTVAR_EVENT &&
+				 slave_skip_counter == 1))
         --slave_skip_counter;
       delete ev;     
       return 0;					// avoid infinite update loops

sql/sql_base.cc

@@ -527,10 +527,10 @@ void close_temporary_tables(THD *thd)
     if (query) // we might be out of memory, but this is not fatal
     {
       // skip temporary tables not created directly by the user
-      if (table->table_name[0] != '#')
+      if (table->real_name[0] != '#')
       {
 	end = strxmov(end,table->table_cache_key,".",
-		      table->table_name,",", NullS);
+		      table->real_name,",", NullS);
 	// here we assume table_cache_key always starts
 	// with \0 terminated db name
 	found_user_tables = 1;