MSVC: Detect C++11

MSVC enables C++11 features by default. Only the version matters

Change-Id: I5c0c27326a876c7755a7608692fb03b8798b5634
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/projectexplorer/abstractmsvctoolchain.cpp

@@ -98,7 +98,14 @@ QByteArray AbstractMsvcToolChain::predefinedMacros(const QStringList &cxxflags)
 ToolChain::CompilerFlags AbstractMsvcToolChain::compilerFlags(const QStringList &cxxflags) const
 {
     Q_UNUSED(cxxflags);
-    return NO_FLAGS;
+
+    switch (m_abi.osFlavor()) {
+    case ProjectExplorer::Abi::WindowsMsvc2010Flavor:
+    case ProjectExplorer::Abi::WindowsMsvc2012Flavor:
+        return STD_CXX11;
+    default:
+        return NO_FLAGS;
+    }
 }
 
 QList<HeaderPath> AbstractMsvcToolChain::systemHeaderPaths() const