Bug#24270

  "mysql_install_db doesn't work properly on 5.1"
  force sql_mode to known value within initialization scripts


scripts/fill_help_tables.sh:
  force sql_mode to known value
scripts/mysql_create_system_tables.sh:
  force sql_mode to known value
scripts/mysql_fix_privilege_tables.sql:
  force sql_mode to known value

scripts/fill_help_tables.sh

@@ -521,6 +521,7 @@ print <<EOF;
 -- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 EOF
+print "set sql_mode='';\n";
 print "delete from help_topic;\n";
 print "delete from help_category;\n";
 print "delete from help_keyword;\n";

scripts/mysql_create_system_tables.sh

@@ -873,6 +873,7 @@ fi
 
 cat << END_OF_DATA
 use mysql;
+set sql_mode='';
 set storage_engine=myisam;
 $c_d
 $i_d

scripts/mysql_fix_privilege_tables.sql

@@ -8,6 +8,7 @@
 # this sql script.
 # On windows you should do 'mysql --force mysql < mysql_fix_privilege_tables.sql'
 
+set sql_mode='';
 set storage_engine=MyISAM;
 
 CREATE TABLE IF NOT EXISTS func (