- BOOTDATA: Use standard INF signature string, so that they can be
opened successfully using ReactOS' or Windows' setupapi.dll with
the INF_STYLE_WIN4 style.
- SETUPLIB: Use the correct INF_STYLE_* INF styles in SpInfOpenInfFile() calls.
- REACTOS : Switch thread locale to user-specified LocaleId when calling
SetupOpenInfFileW(), so that the correct localized strings are used.