Bug #14486004 MYSQL_SETPERMISSION DOES NOT QUOTE USER NAMES

Description: Certain operations using the client tool
'mysql\_setpermisson' which uses username of the format 
"xxx-yyy" results in a syntax error.

Analysis: The user name variable ( $user ) was not quoted
properly in the 'mysql\_setpermission' script. As a result,
while granting user privileges for a user with username of
the format 'xxx-yyy', results in a syntax error.

Fix: The escape sequence has been applied for the user
variable in the script file.

Note: Test case is not added for this fix.
'mysql\_setpermission' executable resides in different
directories on pb2 machines and on local boxes. Hence the 
test case cannot be made generic.

scripts/mysql_setpermission.sh

@@ -264,13 +264,13 @@ sub addall {
   foreach $host (@hosts) {
     # user privileges: SELECT
     if (($todo == 2) || ($todo == 3)) {
-      $sth = $dbh->do("GRANT SELECT ON $db.* TO $user@\"$host\" IDENTIFIED BY \'$pass\'") || die $dbh->errstr;
+      $sth = $dbh->do("GRANT SELECT ON $db.* TO \'$user\'@\'$host\' IDENTIFIED BY \'$pass\'") || die $dbh->errstr;
     } elsif ($todo == 4) {
       # user privileges: SELECT,INSERT,UPDATE,DELETE
-      $sth = $dbh->do("GRANT SELECT,INSERT,UPDATE,DELETE ON $db.* TO $user@\"$host\" IDENTIFIED BY \'$pass\'") || die $dbh->errstr;
+      $sth = $dbh->do("GRANT SELECT,INSERT,UPDATE,DELETE ON $db.* TO \'$user\'@\'$host\' IDENTIFIED BY \'$pass\'") || die $dbh->errstr;
     } elsif ($todo == 5) {
       # user privileges: SELECT,INSERT,UPDATE,DELETE,CREATE,DROP,INDEX,LOCK TABLES,CREATE TEMPORARY TABLES
-      $sth = $dbh->do("GRANT SELECT,INSERT,UPDATE,DELETE,CREATE,DROP,INDEX,LOCK TABLES,CREATE TEMPORARY TABLES ON $db.* TO $user@\"$host\" IDENTIFIED BY \'$pass\'") || die $dbh->errstr;
+      $sth = $dbh->do("GRANT SELECT,INSERT,UPDATE,DELETE,CREATE,DROP,INDEX,LOCK TABLES,CREATE TEMPORARY TABLES ON $db.* TO \'$user\'@\'$host\' IDENTIFIED BY \'$pass\'") || die $dbh->errstr;
     } elsif ($todo == 6) {
        # all privileges
        $sth = $dbh->do("GRANT ALL ON $db.* TO \'$user\'\@\'$host\' IDENTIFIED BY \'$pass\'") || die $dbh->errstr;