[regression] Update to Locale data breaks date/time formatting

Commit f7c9db16be26c0c273ae141a88da80fae44c2304 updated the Qt locale database to CLDR 1.8.0.

However, a few locales possess codes that are not handled by Qt.

For example:

    qDebug() << QLocale::system().dateFormat(QLocale::LongFormat)
             << QLocale::system().timeFormat(QLocale::LongFormat);

With 4.6, that produces the output for the Norwegian locale:

"dddd d. MMMM yyyy" "'kl'. HH.mm.ss " 

Whereas 4.7 produces:

"dddd d. MMMM y" "'kl'. HH:mm:ss tttt" 

Which means that a date/time formatting ends up
"fredag 9. april y" "kl. 15:27:00 CESTCESTCESTCEST"

QLocale either needs to be updated to support these new formats, or the update to CLDR needs to be reverted.