Fix some qdoc-warnings in 5.7.

qtbase/src/corelib/global/qnamespace.qdoc:101: warning: Undocumented enum item 'AA_SynthesizeMouseForUnhandledTabletEvents' in Qt::ApplicationAttribute
qtbase/src/corelib/global/qnamespace.qdoc:2554: warning: Undocumented enum item 'ImAnchorRectangle' in Qt::InputMethodQuery
qtbase/src/corelib/statemachine/qsignaltransition.cpp:154: warning: Can't link to 'Q_COMPILER_DELEGATING_CONSTRUCTORS'
qtbase/src/gui/image/qiconloader.cpp:160: warning: Cannot find 'QIconCacheGtkReader' specified with '\class' in any header file
qtbase/src/gui/painting/qpaintengine_raster.cpp:1382: warning: No documentation for 'QRasterPaintEngine::fillPath(const QPainterPath &path, QSpanData *fillData)'
qtbase/src/testlib/qtest.h:176: warning: No documentation for 'QTest::toString(const QHostAddress &addr)'
qtbase/src/testlib/qtest_gui.h:77: warning: No documentation for 'QTest::toString(const QColor &color)'

Change-Id: If9ac0807accf2530ec7fc2ca7db71a110f9f79bb
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Reviewed-by: Shawn Rutledge <shawn.rutledge@theqtcompany.com>

src/corelib/global/qnamespace.qdoc

@@ -234,6 +234,11 @@
            set to true won't use the native dialogs provided by the platform.
            This value has been added in Qt 5.7.
 
+    \value AA_SynthesizeMouseForUnhandledTabletEvents All tablet events
+           that are not accepted by the application will be translated
+           to mouse events instead. This attribute is enabled
+           by default. This value has been added in Qt 5.7.
+
     The following values are obsolete:
 
     \value AA_ImmediateWidgetCreation This attribute is no longer fully
@@ -2576,6 +2581,8 @@
     \value ImTextAfterCursor    The plain text after the cursor. The widget can decide how much text to return,
                                 but \b{must} not return an empty string unless the cursor is at the end of the document.
     \value ImEnterKeyType       The Enter key type.
+    \value ImAnchorRectangle    The bounding rectangle of the selection anchor.
+                                This value has been added in Qt 5.7.
 
     Masks:
 

src/corelib/statemachine/qsignaltransition.cpp

@@ -159,9 +159,8 @@ QSignalTransition::QSignalTransition(const QObject *sender, const char *signal,
 
   Constructs a new signal transition associated with the given \a signal of
   the given \a sender object and with the given \a sourceState.
-  This constructor is enabled if compiler supports delegating constructor.
-
-  \sa Q_COMPILER_DELEGATING_CONSTRUCTORS
+  This constructor is enabled if the compiler supports delegating constructors,
+  as indicated by the presence of the macro Q_COMPILER_DELEGATING_CONSTRUCTORS.
 */
 
 /*!

src/gui/image/qiconloader.cpp

@@ -158,7 +158,6 @@ QStringList QIconLoader::themeSearchPaths() const
 }
 
 /*!
-    \class QIconCacheGtkReader
     \internal
     Helper class that reads and looks up into the icon-theme.cache generated with
     gtk-update-icon-cache. If at any point we detect a corruption in the file

src/gui/painting/qpaintengine_raster.cpp

@@ -1345,9 +1345,9 @@ void QRasterPaintEngine::clip(const QRegion &region, Qt::ClipOperation op)
 */
 
 
-///*!
-//    \internal
-//*/
+/*!
+    \internal
+*/
 void QRasterPaintEngine::fillPath(const QPainterPath &path, QSpanData *fillData)
 {
 #ifdef QT_DEBUG_DRAW

src/testlib/qtest.h

@@ -173,6 +173,9 @@ template<> inline char *toString(const QVariant &v)
 }
 
 #ifdef QT_NETWORK_LIB
+/*!
+    \internal
+ */
 template<> inline char *toString(const QHostAddress &addr)
 {
     switch (addr.protocol()) {

src/testlib/qtest_gui.h

@@ -74,6 +74,9 @@ QT_BEGIN_NAMESPACE
 namespace QTest
 {
 
+/*!
+    \internal
+ */
 template<> inline char *toString(const QColor &color)
 {
     return qstrdup(color.name().toLocal8Bit().constData());