mtr_process.pl:

Added a sleep for 5 seconds when shuting down,
  work around for strange problem with server restarts
mtr_cases.pl:
  Set default time zone as opt to mysqld
mysql-test-run.pl:
  Enabled --mysqld=<flags> to work
  Put some Windows path names into environment,
  to be used in --replace_result
mysql-test-run.sh:
  Make shell script tolerant to Windows change in test cases

mysql-test/lib/mtr_process.pl

@@ -669,6 +669,8 @@ sub mtr_mysqladmin_shutdown () {
     last;                               # If we got here, we are done
   }
 
+  sleep(5) if $::glob_win32;            # FIXME next startup fails if no sleep
+
   return $res;
 }