Fix Clazy warnings in QSR runtime

There are 83 warnings in Qt header files.

The following warnings are the ones that get repeated in the files.

C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtCore\qabstractanimation.h:24:5: warning: Q_PROPERTY should have either NOTIFY or CONSTANT [clazy-qproperty-without-notify]
C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtCore\qhashfunctions.h:132:1: warning: Move qHash(std::nullptr_t) into std namespace for ADL lookup [clazy-qhash-namespace]
C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtCore\qjsonarray.h:107:74: warning: Mixing iterators with const_iterators [clazy-strict-iterators]
C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtGui\qpointingdevice.h:111:5: warning: signal QPointingDevice::grabChanged shouldn't be const [clazy-const-signal-or-slot]
C:\Qt2.1.0_RC1\6.5.4\mingw_64\include\QtNetwork\qnetworkaccessmanager.h:132:5: warning: getter QNetworkAccessManager::supportedSchemesImplementation possibly mismarked as a slot [clazy-const-signal-or-slot]