qmlpuppet: Fix compilation with Qt 4.

Change-Id: I9d6b4044fb4ad59c8fd15e878cc377ca838dfb01
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

share/qtcreator/qml/qmlpuppet/types/enumeration.cpp

@@ -51,7 +51,7 @@ Enumeration::Enumeration(const QString &enumerationName)
 
 Enumeration::Enumeration(const QString &scope, const QString &name)
 {
-    QString enumerationString = scope + QStringLiteral(".") + name;
+    QString enumerationString = scope + QLatin1Char('.') + name;
 
     m_enumerationName = enumerationString.toUtf8();
 }