all: some m_d -> d style

Change-Id: Iac1f12980bf47666007817cfb2c64a6d1e9b780e
Reviewed-on: http://codereview.qt-project.org/4477
Reviewed-by: hjk <qthjk@ovi.com>

src/libs/utils/classnamevalidatinglineedit.h

@@ -70,7 +70,7 @@ protected:
     virtual void slotChanged(const QString &t);
 
 private:
-    ClassNameValidatingLineEditPrivate *m_d;
+    ClassNameValidatingLineEditPrivate *d;
 };
 
 } // namespace Utils