Manual merge from mysql-trunk-merge.

Conflicts:
  - mysql-test/suite/rpl/r/rpl_binlog_grant.result
  - mysql-test/suite/rpl/r/rpl_sp.result
  - mysql-test/suite/rpl/t/rpl_binlog_grant.test
  - sql/sql_parse.cc
  - sql/sql_table.cc
  - sql/sql_test.cc

mysql-test/extra/rpl_tests/rpl_current_user.test

@@ -0,0 +1,127 @@
+--let $count=1
+connection master;
+
+if (`SELECT '$diff_table' = ''`)
+{
+  let $diff_table= mysql.user;
+}
+
+--echo 
+--echo 
+--echo 
+--echo TEST STATEMENT: '$statement'
+--echo --------------------------------------------------------------------------
+
+if (`SELECT '$diff_columns' = ''`)
+{
+  eval CREATE VIEW test.bug48321_v1 AS SELECT user FROM $diff_table
+        WHERE user LIKE 'bug48321%';
+}
+
+if (`SELECT '$diff_columns' <> ''`)
+{
+  eval CREATE VIEW test.bug48321_v1 AS SELECT user, $diff_columns
+       FROM $diff_table WHERE user LIKE 'bug48321%';
+}
+
+while (`SELECT $count < 6`)
+{
+  --echo
+  --echo TEST STATEMENT: '$statement'
+  --echo CASE $count:
+  --echo -------
+
+  let $user2= 'bug48321_2'@'localhost';
+  let $user3= 'bug48321_3'@'localhost';
+
+  let $user1= CURRENT_USER();
+  if (`SELECT '$action'='RENAME'`)
+  {
+    let $user1= $user1 TO 'bug48321_4'@'localhost';
+    let $user2= $user2 TO 'bug48321_5'@'localhost';
+    let $user3= $user3 TO 'bug48321_6'@'localhost';
+  }
+
+  if (`SELECT '$action'='GRANT'`)
+  {
+    let $user1= $user1 IDENTIFIED BY 'user1';
+    let $user3= $user3 IDENTIFIED BY '';
+  }
+
+  if (`SELECT $count=1`)
+  {
+   --echo # Only CURRENT_USER() in the user list of the test statement.
+    let $users_list= $user1;
+  }
+
+  if (`SELECT $count=2`)
+  {
+    --echo # Two users are in the test statement, CURRENT_USER is the first one.
+    let $users_list= $user1, $user2;
+  }
+
+  if (`SELECT $count=3`)
+  {
+    --echo # Two users are in the test statement, CURRENT_USER is the last one.
+    let $users_list= $user2, $user1;
+  }
+
+  if (`SELECT $count=4`)
+  {
+    --echo # Three users are in the test statement, CURRENT_USER is the second one.
+    let $users_list= $user2, $user1, $user3;
+  }
+
+  if (`SELECT $count=5`)
+  {
+    --echo # CURRENT_USER is not in the test statement.
+    let $users_list= $user2, $user3;
+  }
+
+  --echo users_list= $users_list
+  --echo
+  --echo # Connect to master with user1, so user1 always is the current user,
+  --echo # when test statement is runing.
+  eval GRANT ALL PRIVILEGES ON *.* TO 'bug48321_1'@'localhost'
+       WITH GRANT OPTION; 
+  eval CREATE USER 'bug48321_2'@'localhost', 'bug48321_3'@'localhost'
+       IDENTIFIED BY 'user3';
+
+  if (`SELECT '$action'='REVOKE'`)
+  {
+    --echo
+    --echo # Grant some privileges to users at first when testing 
+    --echo # 'REVOKE ...' statement.
+    eval GRANT ALL PRIVILEGES ON *.* TO 'bug48321_2'@'localhost',
+         'bug48321_3'@'localhost' WITH GRANT OPTION; 
+    eval GRANT ALTER ROUTINE, EXECUTE ON PROCEDURE p1 TO 'bug48321_1'@'localhost',
+         'bug48321_2'@'localhost', 'bug48321_3'@'localhost';
+  }
+
+  connect (conn1, 127.0.0.1, 'bug48321_1'@'localhost',,);
+  connection conn1;
+  --echo
+  let $temp= `SELECT "$statement"`;
+  eval $temp;
+  --echo
+
+  disconnect conn1;
+
+  connection master;
+  sync_slave_with_master;
+
+  connection master;
+  let $diff_table_1= master:test.bug48321_v1;
+  let $diff_table_2= slave:test.bug48321_v1;
+  source include/diff_tables.inc;
+  --echo
+
+  --echo # Delete all bug48321% users
+  connection master;
+  DELETE FROM mysql.user WHERE user LIKE 'bug48321%';
+  DELETE FROM mysql.procs_priv WHERE user LIKE 'bug48321%';
+  FLUSH PRIVILEGES;
+
+  inc $count;
+}
+DROP VIEW test.bug48321_v1;