Port shiftTimes() to QTimeZone

src/kaevent.cpp

@@ -5220,7 +5220,7 @@ bool KAEvent::convertKCalEvents(const Calendar::Ptr &calendar, int calendarVersi
              * It's a KAlarm pre-1.9.2 calendar file.
              * Convert from clock time to the local system time zone.
              */
-            event->shiftTimes(KDateTime::ClockTime, localZone);
+            event->shiftTimes(QTimeZone::systemTimeZone(), QTimeZone::systemTimeZone());
             converted = true;
         }
 

src/karecurrence.cpp

@@ -1216,7 +1216,7 @@ void KARecurrence::addExDate(const QDate &exdate)
     d->mRecurrence.addExDate(exdate);
 }
 
-void KARecurrence::shiftTimes(const KDateTime::Spec &oldSpec, const KDateTime::Spec &newSpec)
+void KARecurrence::shiftTimes(const QTimeZone &oldSpec, const QTimeZone &newSpec)
 {
     d->mRecurrence.shiftTimes(oldSpec, newSpec);
 }

src/karecurrence.h

@@ -421,7 +421,7 @@ public:
      * @param oldSpec the time specification which provides the clock times
      * @param newSpec the new time specification
      */
-    void shiftTimes(const KDateTime::Spec &oldSpec, const KDateTime::Spec &newSpec);
+    void shiftTimes(const QTimeZone &oldSpec, const QTimeZone &newSpec);
 
     KCalCore::RecurrenceRule *defaultRRuleConst() const;
     /** Return the recurrence's period type. */