Rename system_mysql_db_fix.test to system_mysql_db_fix30020 as it tests

mysql_fix_privilege_tables.s's ability to convert the system tables as of
3.20 to current system table format
Add similar test for 4.1.23 tables - but use "mysql < mysql_fix_privilege_tables.sql"
so it can be run on any platform. 

mysql-test/mysql-test-run.pl

@@ -151,6 +151,7 @@ our $exe_mysqlslap;
 our $exe_mysqlimport;
 our $exe_mysqlshow;
 our $exe_mysql_fix_system_tables;
+our $file_mysql_fix_privilege_tables;
 our $exe_mysqltest;
 our $exe_ndbd;
 our $exe_ndb_mgmd;
@@ -1414,6 +1415,9 @@ sub executable_setup () {
 			"$path_client_bindir/mysql_fix_privilege_tables");
   }
 
+  # Look for mysql_fix_privilege_tables.sql script
+  $file_mysql_fix_privilege_tables=
+    mtr_file_exists("$glob_basedir/scripts/mysql_fix_privilege_tables.sql");
 
   if ( ! $opt_skip_ndbcluster and executable_setup_ndb())
   {
@@ -1836,6 +1840,7 @@ sub environment_setup () {
       "--socket=$master->[0]->{'path_sock'}";
     $ENV{'MYSQL_FIX_SYSTEM_TABLES'}=  $cmdline_mysql_fix_system_tables;
   }
+  $ENV{'MYSQL_FIX_PRIVILEGE_TABLES'}=  $file_mysql_fix_privilege_tables;
 
   # ----------------------------------------------------
   # Setup env so childs can execute my_print_defaults

mysql-test/t/system_mysql_db_fix.test → mysql-test/t/system_mysql_db_fix30020.test

@@ -6,9 +6,11 @@
 
 #
 # This is the test for mysql_fix_privilege_tables
+# It checks that a system tables from mysql 3.20
+# can be upgraded to current system table format
 #
 # Note: If this test fails, don't be confused about the errors reported
-# by mysql-test-run; This shows warnings from generated by
+# by mysql-test-run This shows warnings generated by
 # mysql_fix_system_tables which should be ignored.
 # Instead, concentrate on the errors in r/system_mysql_db.reject
 
@@ -81,7 +83,7 @@ INSERT INTO user VALUES ('localhost','root','','Y','Y','Y','Y','Y','Y','Y','Y','
 INSERT INTO user VALUES ('localhost','',    '','N','N','N','N','N','N','N','N','N');
 
 # Call the "shell script" $MYSQL_FIX_SYSTEM_TABLES using system
--- system $MYSQL_FIX_SYSTEM_TABLES --database=test > /dev/null
+-- system $MYSQL_FIX_SYSTEM_TABLES --database=test > $MYSQLTEST_VARDIR/log/system_mysql_db_fix30020.log 2>&1
 -- enable_query_log
 -- enable_result_log
 

mysql-test/t/system_mysql_db_fix40123-master.opt

+--result-file=system_mysql_db