C++ indenter: Fix reindenting 'Q_SIGNALS:'.

Change-Id: Ieb2a7673e99dec06d925263f48b39c0c3a4d2fa1
Reviewed-on: http://codereview.qt.nokia.com/108
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

src/plugins/cpptools/cppqtstyleindenter.cpp

@@ -75,7 +75,8 @@ static bool colonIsElectric(const QString &text)
             || text.contains(QLatin1String("public"))
             || text.contains(QLatin1String("private"))
             || text.contains(QLatin1String("protected"))
-            || text.contains(QLatin1String("signals"))) {
+            || text.contains(QLatin1String("signals"))
+            || text.contains(QLatin1String("Q_SIGNALS"))) {
         return true;
     }