Portability fixes

mysql-test/mysql-test-run.sh:
  Avoid 'too many arguments' error
mysql-test/t/system_mysql_db_fix-master.opt:
  Add missing newline
scripts/mysql_fix_privilege_tables.sh:
  Portability fix

mysql-test/mysql-test-run.sh

@@ -1447,7 +1447,7 @@ then
  if [ x$RECORD = x1 ]; then
   $ECHO "Will not run in record mode without a specific test case."
  else
-  for tf in `ls -1 $TESTDIR/*.$TESTSUFFIX | $SORT`
+  for tf in $TESTDIR/*.$TESTSUFFIX
   do
     run_testcase $tf
   done

mysql-test/t/system_mysql_db_fix-master.opt

@@ -1 +1 @@
---result-file=system_mysql_db
+--result-file=system_mysql_db

scripts/mysql_fix_privilege_tables.sh

@@ -42,7 +42,7 @@ database="mysql"
 bindir="@bindir@"
 
 # Old format where there is only one argument and it's the password
-if test "$#" == 1
+if test "$#" = 1
 then
   case "$1" in
   --*) ;;