QLocale & System Digit/Money Grouping Settings

Qt does not respect underlying system's locale settings for digit/money grouping. This setting is present in "Clock, Language and Region" in Control Panel of Windows OS'es. SS is attached.

In windows you can access this value by LOCALE_SGROUPING using GetLocale* functions.
Also "struct lconv" provides "grouping" field for accessing this setting. (Probably for unix based systems)

Current Qt versions only fetch grouping separator field and assume that this setting is "3;0" (or "3\0") by default. I'm currently workaround this bug by calling QLocale::setNumberOptions(numberOptions() | QLocale::OmitGroupSeparator) if grouping setting is "0". But this is nowhere near perfect.