QLocales can be compared for equality,
so qHash should be overloaded, too.
[ChangeLog][QtCore][QLocale] Added qHash(QLocale).
Change-Id: Ia0fdf1207b842b9bb20b8f9ab0165016915debf4
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>