[boost] [config] RTTI detection on Intel C++

I was going to prepare a simple pull request that basically added #if !defined(__RTTI) && !defined(__INTEL_RTTI__) && !defined(__GXX_RTTI) && !defined(_CPPRTTI) #define BOOST_NO_RTTI #define BOOST_NO_TYPEID #endif to intel.hpp, but then I saw that this file doesn't contain any logic for BOOST_NO_EXCEPTIONS, relying instead on common_edg.hpp to check __EXCEPTIONS. So I wonder whether the preferred approach wouldn't be to check __RTTI in common_edg.hpp instead. Opinions? There's also a slight complication here because I suspect that when Intel is in Microsoft mode, when RTTI is off it will still support typeid, as MSVC does; so just BOOST_NO_RTTI would need to be defined, and not BOOST_NO_TYPEID.