CppParser: Support for return values in global ns

If a return value of a virtual member function is specified to be in the
global namespace using leading double colons (e.g. virtual ::MyClass*)
the parser is now handling the virtual keyword correctly. Prior the
function was not declared as virtual and the return value was named as
virtual::MyClass* which led to completely missleading results.

CppParser/src/Parser.cpp

@@ -133,6 +133,7 @@ inline void Parser::append(std::string& decl, const std::string& token)
 	 || token == "static"
 	 || token == "mutable"
 	 || token == "inline"
+	 || token == "virtual"
 	 || token == "volatile"
 	 || token == "register"
 	 || token == "thread_local")