Current TimeZone_md.c for Win32 uses "Std" registry's value to decide
current time zone. This value is the localized zone name.

As Bug4388398's evalucation says, it is not good to use this value
to decide time zone. This is risky. Java might use incorrect time zone.

TimeZone_md.c should use another way to decide current time zone,
otherwise, should use the other registry information besides "Std".