[Bug 9490] New: LOCALE_IFIRSTDAYOFWEEK is 0 by default, instead of current locale value

http://bugs.winehq.org/show_bug.cgi?id=9490

Summary: LOCALE_IFIRSTDAYOFWEEK is 0 by default, instead of
                    current locale value
           Product: Wine
           Version: CVS/GIT
          Platform: Other
        OS/Version: other
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: wine-kernel
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Unless the user has manually tweaked the "iFirstDayOfWeek" registry key, 
GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_IFIRSTDAYOFWEEK, ...) always returns
zero, which means Sunday, even though the locale on the system indicates
otherwise. The effect is that month calendar controls, for example, starts the
week with sunday rather than, say, monday, which is the ISO standard and common
in many countries.

The current locale standard can be fetched with two nl_langinfo calls. I don't
really understand enough of kernel32/locale.c to make the necessary
modifications, though.