C++: Do type and name equality checking in a safe manner.

Change the TypeMatcher to also match names, and use two "block" lists
in SafeMatcher to prevent infinite recursion.

Task-number: QTCREATORBUG-11240
Change-Id: I0367ae795ee6be579b83aeb8d46723c877e4aa75
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/plugins/clangcodemodel/test/completiontesthelper.cpp

@@ -60,7 +60,7 @@ namespace Internal {
 CompletionTestHelper::CompletionTestHelper(QObject *parent) :
     QObject(parent),
     m_completer(new ClangCompleter()),
-    m_position(m_line),
+    m_position(0),
     m_line(0),
     m_column(0)
 {