QWaitCondition: add notify_one/notify_all, i.e. STL naming

This makes the API more consistent with the STL, which helps discovering
the API. Much like QVector has push_back etc.

Change-Id: I75f6b77ab94233c15e17f66605f4bf13aa03e61c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

src/corelib/thread/qwaitcondition.h

@@ -65,6 +65,9 @@ public:
     void wakeOne();
     void wakeAll();
 
+    void notify_one() { wakeOne(); }
+    void notify_all() { wakeAll(); }
+
 private:
     Q_DISABLE_COPY(QWaitCondition)
 

src/corelib/thread/qwaitcondition.qdoc

@@ -172,3 +172,18 @@
 
     \sa wakeOne(), wakeAll()
 */
+
+
+/*! \fn void QWaitCondition::notify_one()
+    \since 5.8
+
+    This function is provided for STL compatibility. It is equivalent
+    to wakeOne().
+*/
+
+/*! \fn void QWaitCondition::notify_all()
+    \since 5.8
+
+    This function is provided for STL compatibility. It is equivalent
+    to wakeAll().
+*/