message: tinyformat: Add system header pragmas
  Newer GCC explode with implicit switch fallthrough warnings.  Easiest to just flag this as system header, I think.
diff: // User defined types: Uses operator<< for user defined types by default.
  // Overload formatValue() for more control.
  +#ifdef __clang__
  +# pragma clang system_header
  +#elif defined __GNUC__
  +# pragma GCC system_header
  +#endif
  #ifndef TINYFORMAT_H_INCLUDED
  #define TINYFORMAT_H_INCLUDED
  