Fix some qdoc warnings

src/corelib/tools/qhash.cpp:2596: (qdoc) warning: clang found diagnostics parsing \fn template <class Key, class T> template <class InputIterator> QMultiHash::QMultiHash(InputIterator begin, InputIterator end)
    error: 'QMultiHash' is not a class, namespace, or enumeration
src/corelib/kernel/qobject.cpp:4593: (qdoc) warning: Undocumented parameter 'EXPORT_MACRO' in QObject::Q_NAMESPACE_EXPORT
src/corelib/global/qfloat16.cpp:129: (qdoc) warning: Cannot tie this documentation to anything
src/corelib/text/qlocale.qdoc:1204: (qdoc) warning: Overrides a previous doc
src/corelib/text/qlocale.qdoc:1187: (qdoc) warning: (The previous doc is here)
src/network/kernel/qhostinfo.cpp:597: (qdoc) warning: clang found diagnostics parsing \fn QHostInfo(QHostInfo &&other)
src/printsupport/dialogs/qabstractprintdialog.cpp:346: (qdoc) warning: clang found diagnostics parsing \fn int QAbstractPrintDialog::exec(): error: out-of-line definition of 'exec' does not match any declaration in 'QAbstractPrintDialog'
src/testlib/qsignalspy.qdoc:101: (qdoc) warning: clang found diagnostics parsing \fn QSignalSpy(const QObject *obj, const QMetaMethod &signal):  error: expected unqualified-id
src/testlib/doc/src/qttest-best-practices.qdoc:28: (qdoc) warning: Can't link to 'Q_VERIFY2()'
src/widgets/kernel/qactiongroup.cpp:291: (qdoc) warning: Undocumented parameter 'b' in QActionGroup::setExclusive()
src/widgets/kernel/qactiongroup.cpp:305: (qdoc) warning: Undocumented return value (hint: use 'return' or 'returns' in the text
src/widgets/kernel/qshortcut.cpp:542: (qdoc) warning: No such parameter 'context' in QShortcut::QShortcut()
src/widgets/widgets/qdatetimeedit.cpp:632: (qdoc) warning: No such parameter 'minimumTime' in QDateTimeEdit::setTimeRange()
src/widgets/widgets/qdatetimeedit.cpp:632: (qdoc) warning: No such parameter 'maximumTime' in QDateTimeEdit::setTimeRange()
src/widgets/widgets/qdatetimeedit.cpp:632: (qdoc) warning: No such parameter 'less' in QDateTimeEdit::setTimeRange()

Change-Id: I9799b5135e84c4d811674b2d114ef27315bc12df
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

src/corelib/global/qfloat16.cpp

@@ -109,7 +109,7 @@ QT_BEGIN_NAMESPACE
 /*!
     \internal
     \since 5.14
-    bool qfloat16::isInf() const noexcept
+    \fn bool qfloat16::isInf() const noexcept
 
     Tests whether this \c qfloat16 value is an infinity.
 
@@ -119,7 +119,7 @@ QT_BEGIN_NAMESPACE
 /*!
     \internal
     \since 5.14
-    bool qfloat16::isNaN() const noexcept
+    \fn bool qfloat16::isNaN() const noexcept
 
     Tests whether this \c qfloat16 value is "not a number".
 
@@ -128,7 +128,7 @@ QT_BEGIN_NAMESPACE
 
 /*!
     \since 5.14
-    bool qfloat16::isNormal() const noexcept
+    \fn bool qfloat16::isNormal() const noexcept
 
     Tests whether this \c qfloat16 value is finite and in normal form.
 
@@ -138,7 +138,7 @@ QT_BEGIN_NAMESPACE
 /*!
     \internal
     \since 5.14
-    bool qfloat16::isFinite() const noexcept
+    \fn bool qfloat16::isFinite() const noexcept
 
     Tests whether this \c qfloat16 value is finite.
 

src/corelib/kernel/qobject.cpp

@@ -4612,7 +4612,7 @@ QDebug operator<<(QDebug dbg, const QObject *o)
 
     It works exactly like the Q_NAMESPACE macro. However, the external
     \c{staticMetaObject} variable that gets defined in the namespace
-    is declared with the supplied \c{EXPORT_MACRO} qualifier. This is
+    is declared with the supplied \a EXPORT_MACRO qualifier. This is
     useful if the object needs to be exported from a dynamic library.
 
     \sa Q_NAMESPACE, {Creating Shared Libraries}

src/corelib/text/qlocale.qdoc

@@ -1201,14 +1201,6 @@
 \sa toShort()
 */
 
-/*!
-\fn QString QLocale::toString(ushort i) const
-
-\overload
-
-\sa toUShort()
-*/
-
 /*!
 \fn QString QLocale::toString(int i) const
 

src/corelib/tools/qhash.cpp

@@ -2597,7 +2597,7 @@ uint qHash(long double key, uint seed) noexcept
     \sa operator=()
 */
 
-/*! \fn template <class Key, class T> template <class InputIterator> QMultiHash::QMultiHash(InputIterator begin, InputIterator end)
+/*! \fn template <class Key, class T> template <class InputIterator> QMultiHash<Key, T>::QMultiHash(InputIterator begin, InputIterator end)
     \since 5.14
 
     Constructs a multi-hash with a copy of each of the elements in the iterator range

src/network/kernel/qhostinfo.cpp

@@ -595,7 +595,7 @@ QHostInfo::QHostInfo(const QHostInfo &other)
 }
 
 /*!
-    \fn QHostInfo(QHostInfo &&other)
+    \fn QHostInfo::QHostInfo(QHostInfo &&other)
 
     Move-constructs a new QHostInfo from \a other.
 

src/printsupport/dialogs/qabstractprintdialog.cpp

@@ -343,13 +343,6 @@ void QAbstractPrintDialogPrivate::setPrinter(QPrinter *newPrinter)
     pd = printer->d_func();
 }
 
-/*!
-    \fn int QAbstractPrintDialog::exec()
-
-    This virtual function is called to pop up the dialog. It must be
-    reimplemented in subclasses.
-*/
-
 /*!
     \class QPrintDialog
 

src/testlib/doc/src/qttest-best-practices.qdoc

@@ -243,7 +243,7 @@
     Instead of \c Q_ASSERT, the \l QCOMPARE() or \l QVERIFY() macro variants
     should be used. They cause the current test to report a failure and
     terminate, but allow the remaining test functions to be executed and the
-    entire test program to terminate normally. \l Q_VERIFY2() even allows a
+    entire test program to terminate normally. \l QVERIFY2() even allows a
     descriptive error message to be recorded in the test log.
 
     \section1 Writing Reliable Tests

src/testlib/qsignalspy.qdoc

@@ -98,7 +98,7 @@
     \snippet code/doc_src_qsignalspy.cpp 6
 */
 
-/*! \fn QSignalSpy(const QObject *obj, const QMetaMethod &signal)
+/*! \fn QSignalSpy::QSignalSpy(const QObject *obj, const QMetaMethod &signal)
     \since 5.14
 
     Constructs a new QSignalSpy that listens for emissions of the \a signal

src/widgets/kernel/qactiongroup.cpp

@@ -292,7 +292,8 @@ QList<QAction*> QActionGroup::actions() const
     \brief Enable or disable the group exclusion checking
 
     This is a convenience method that calls
-    setExclusionPolicy(ExclusionPolicy::Exclusive).
+    setExclusionPolicy(ExclusionPolicy::Exclusive) when \a b is true,
+    else setExclusionPolicy(QActionGroup::ExclusionPolicy::None).
 
     \sa QActionGroup::exclusionPolicy
 */
@@ -303,7 +304,7 @@ void QActionGroup::setExclusive(bool b)
 }
 
 /*!
-    \brief Returs true if the group is exclusive
+    \brief Returns true if the group is exclusive
 
     The group is exclusive if the ExclusionPolicy is either Exclusive
     or ExclusionOptional.

src/widgets/kernel/qshortcut.cpp

@@ -475,7 +475,7 @@ QShortcut::QShortcut(QWidget *parent)
     match the \a key sequence. Depending on the ambiguity of the
     event, the shortcut will call the \a member function, or the \a
     ambiguousMember function, if the key press was in the shortcut's
-    \a context.
+    \a shortcutContext.
 */
 QShortcut::QShortcut(const QKeySequence &key, QWidget *parent,
                      const char *member, const char *ambiguousMember,

src/widgets/widgets/qdatetimeedit.cpp

@@ -335,7 +335,6 @@ void QDateTimeEdit::setCalendar(QCalendar calendar)
 /*!
   \since 4.4
   \property QDateTimeEdit::minimumDateTime
-
   \brief the minimum datetime of the date time edit
 
   Changing this property implicitly updates the \l minimumDate and \l
@@ -637,8 +636,8 @@ void QDateTimeEdit::setDateRange(const QDate &min, const QDate &max)
 
   Note that these only constrain the date time edit's value on,
   respectively, the \l minimumDate and \l maximumDate. When these date
-  properties do not coincide, times after \a maximumTime are allowed on dates
-  before \l maximumDate and times before \a minimumTime are allowed on dates
+  properties do not coincide, times after \a max are allowed on dates
+  before \l maximumDate and times before \a min are allowed on dates
   after \l minimumDate.
 
   \snippet code/src_gui_widgets_qdatetimeedit.cpp 5
@@ -649,7 +648,7 @@ void QDateTimeEdit::setDateRange(const QDate &min, const QDate &max)
 
   If either \a min or \a max is invalid, this function does nothing. This
   function preserves the \l minimumDate and \l maximumDate properties. If those
-  properties coincide and max is \a less than \a min, \a min is used as \a max.
+  properties coincide and \a max is less than \a min, \a min is used as \a max.
 
   \sa minimumTime, maximumTime, setDateTimeRange(), QTime::isValid()
 */