Clang: Undefine language features as fix for MSVC2015/clang-3.8.0

This applies the following change for the clang code model, too.

  commit d13d179524
  Clang Static Analyzer: Workaround analyzing MSVC2015 projects with clang 3.8.0 II

Change-Id: Ia229d7e8b24c2e1c0a83d9a53c623ea1f79c4a06
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>

src/plugins/clangcodemodel/clangutils.cpp

@@ -93,6 +93,7 @@ public:
         optionsBuilder.addOptionsForLanguage(/*checkForBorlandExtensions*/ true);
 
         optionsBuilder.addToolchainAndProjectDefines();
+        optionsBuilder.undefineCppLanguageFeatureMacrosForMsvc2015();
 
         optionsBuilder.addPredefinedMacrosAndHeaderPathsOptions();
         optionsBuilder.addWrappedQtHeadersIncludePath();