Issue 90820

It comes from https://bugzilla.novell.com/show_bug.cgi?id=399101. The unopkg
tool displayed messages in random locales.

unopkg initializes the resource manages the following way:

--- cut desktop/source/pkgchk/unopkg/unopkg_shared.h ---
struct DeploymentResMgr :  public rtl::StaticWithInit< ResMgr *, DeploymentResMgr > 
{
        ResMgr * operator () () {
                return ResMgr::CreateResMgr( "deployment" LIBRARY_SOLARUPD() );
        }
};
--- cut desktop/source/pkgchk/unopkg/unopkg_shared.h ---

=> it does not define any locale. ResMgr::CreateResMgr does the following when
the locale is not defined:

--- cut tools/source/rc/resmgr.cxx ---
    if( ! aLocale.Language.getLength() )
        aLocale = ResMgrContainer::get().getDefLocale();    
--- cut tools/source/rc/resmgr.cxx ---

Unfortunately, the default locale is defined only by 
ResMgrContainer::setDefLocale. It is called on various locations, for example:

--- cut desktop/source/app/app.cxx ---
            // LanguageSelection langselect;
            OUString aUILocaleString = LanguageSelection::getLanguageString();
            sal_Int32 nIndex = 0;
            OUString aLanguage = aUILocaleString.getToken( 0, '-', nIndex);
            OUString aCountry = aUILocaleString.getToken( 0, '-', nIndex);
            OUString aVariant = aUILocaleString.getToken( 0, '-', nIndex);

            ::com::sun::star::lang::Locale aLocale( aLanguage, aCountry, aVariant );

            Desktop::pResMgr = ResMgr::SearchCreateResMgr( U2S( aMgrName ),
aLocale);
            AllSettings as = GetSettings();
            as.SetUILocale(aLocale);
            SetSettings(as);
--- cut desktop/source/app/app.cxx ---

but not in unopkg.

I attach a simple patch that sets the default locale in ResMgrContainer::init();
It might help to remove hacks from the other locations where the resource
manager is initialized.