* unwind-cxx.h (__cxa_get_globals, __cxa_get_globals_fast): Mark const.
	(__cxa_get_exception_ptr): Mark pure.
	(__cxa_bad_cast, __cxa_bad_typeid): Mark noreturn
	(__terminate): Makr throw ().
	* exception (terminate): Mark throw().
	(uncaught_exception): Mark pure.
	* eh_ptr.cc (_M_safe_bool_dummy): Mark throw().
	* guard.cc (__cxa_guard_abort, __cxa_guard_release): Mark throw().
	* eh_terminate.cc (__terminate, terminate): Mark throw().
	* vec.cc (__cxa_vec_cleanup): Mark throw().
	* cxxabi.h (__cxa_vec_cleanup, __cxa_guard_release, __cxa_guard_abort): Mark throw ().
	(__cxa_pure_virtual): Mark noreturn.
	(__cxa_current_exception_type): Mark throw and pure.
	* exception_ptr.h (operator ==, !=, _M_get, !, ==,
	__cxa_exception_type): Mark pure.
	(_M_safe_bool_dummy): Mark pure and const.

From-SVN: r146331