Pass QDate and QTime by value in various static and local functions

They're value types, so pass them as such.

Change-Id: I0dc46c63a3a0e6d859b821362f71390f0148b64c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/text/qlocale_mac.mm

@@ -119,7 +119,7 @@ static QString macDayName(int day, bool short_format)
     return QString();
 }
 
-static QString macDateToString(const QDate &date, bool short_format)
+static QString macDateToString(QDate date, bool short_format)
 {
     QCFType<CFDateRef> myDate = QDateTime(date, QTime()).toCFDate();
     QCFType<CFLocaleRef> mylocale = CFLocaleCopyCurrent();
@@ -131,7 +131,7 @@ static QString macDateToString(const QDate &date, bool short_format)
     return QCFString(CFDateFormatterCreateStringWithDate(0, myFormatter, myDate));
 }
 
-static QString macTimeToString(const QTime &time, bool short_format)
+static QString macTimeToString(QTime time, bool short_format)
 {
     QCFType<CFDateRef> myDate = QDateTime(QDate::currentDate(), time).toCFDate();
     QCFType<CFLocaleRef> mylocale = CFLocaleCopyCurrent();

src/corelib/time/qdatetime.cpp

@@ -682,7 +682,7 @@ static bool inDateTimeRange(qint64 jd, bool start)
     return jd >= minDay && jd < maxDay;
 }
 
-static QDateTime toEarliest(const QDate &day, const QDateTime &form)
+static QDateTime toEarliest(QDate day, const QDateTime &form)
 {
     const Qt::TimeSpec spec = form.timeSpec();
     const int offset = (spec == Qt::OffsetFromUTC) ? form.offsetFromUtc() : 0;
@@ -806,7 +806,7 @@ QDateTime QDate::startOfDay(const QTimeZone &zone) const
 }
 #endif // timezone
 
-static QDateTime toLatest(const QDate &day, const QDateTime &form)
+static QDateTime toLatest(QDate day, const QDateTime &form)
 {
     const Qt::TimeSpec spec = form.timeSpec();
     const int offset = (spec == Qt::OffsetFromUTC) ? form.offsetFromUtc() : 0;
@@ -1119,7 +1119,7 @@ static QString toStringTextDate(QDate date)
     return toStringTextDate(date, QCalendar());
 }
 
-static QString toStringIsoDate(const QDate &date)
+static QString toStringIsoDate(QDate date)
 {
     const auto parts = QCalendar().partsFromDate(date);
     if (parts.isValid() && parts.year >= 0 && parts.year <= 9999)
@@ -2869,7 +2869,7 @@ static void msecsToTime(qint64 msecs, QDate *date, QTime *time)
 }
 
 // Converts a date/time value into msecs
-static qint64 timeToMSecs(const QDate &date, const QTime &time)
+static qint64 timeToMSecs(QDate date, QTime time)
 {
     return ((date.toJulianDay() - JULIAN_DAY_FOR_EPOCH) * MSECS_PER_DAY)
            + time.msecsSinceStartOfDay();
@@ -3214,7 +3214,7 @@ static void setTimeSpec(QDateTimeData &d, Qt::TimeSpec spec, int offsetSeconds)
     }
 }
 
-static void setDateTime(QDateTimeData &d, const QDate &date, const QTime &time)
+static void setDateTime(QDateTimeData &d, QDate date, QTime time)
 {
     // If the date is valid and the time is not we set time to 00:00:00
     QTime useTime = time;

src/corelib/time/qdatetimeparser.cpp

@@ -903,7 +903,7 @@ QDateTimeParser::parseSection(const QDateTime &currentValue, int sectionIndex,
   by \a weekDay.
 */
 
-static int weekDayWithinMonth(const QCalendar &calendar, const QDate &rough, int weekDay)
+static int weekDayWithinMonth(QCalendar calendar, QDate rough, int weekDay)
 {
     // TODO: can we adapt this to cope gracefully with intercallary days (day of
     // week > 7) without making it slower for more widely-used calendars ?

src/corelib/time/qtimezoneprivate_win.cpp

@@ -363,7 +363,7 @@ QDate calculateTransitionLocalDate(const SYSTEMTIME &rule, int year)
 }
 
 // Converts a date/time value into msecs
-inline qint64 timeToMSecs(const QDate &date, const QTime &time)
+inline qint64 timeToMSecs(QDate date, QTime time)
 {
     return ((date.toJulianDay() - JULIAN_DAY_FOR_EPOCH) * MSECS_PER_DAY)
            + time.msecsSinceStartOfDay();

src/plugins/sqldrivers/ibase/qsql_ibase.cpp

@@ -250,7 +250,7 @@ static QDateTime fromTimeStamp(char *buffer)
     return QDateTime(d, t);
 }
 
-static ISC_TIME toTime(const QTime &t)
+static ISC_TIME toTime(QTime t)
 {
     static const QTime midnight(0, 0, 0, 0);
     return (ISC_TIME)midnight.msecsTo(t) * 10;
@@ -266,7 +266,7 @@ static QTime fromTime(char *buffer)
     return t;
 }
 
-static ISC_DATE toDate(const QDate &t)
+static ISC_DATE toDate(QDate t)
 {
     static const QDate basedate(1858, 11, 17);
     ISC_DATE date;