C++: Compile fixes in tests and tools.

After some refactorings not all usages, especially in tests and tools,
were adapted.

Change-Id: I7ed24bb1c8e55e55ed74eda3a8fd7610e725f4cb
Reviewed-by: hjk <qthjk@ovi.com>

tests/auto/cplusplus/semantic/tst_semantic.cpp

@@ -486,7 +486,7 @@ void tst_Semantic::template_instance_1()
     FullySpecifiedType genTy = DeprecatedGenTemplateInstance::instantiate(templId, decl, control);
 
     Overview oo;
-    oo.setShowReturnTypes(true);
+    oo.showReturnTypes = true;
 
     const QString genDecl = oo.prettyType(genTy);
     QCOMPARE(genDecl, QString::fromLatin1("void (const int &)"));