* diagnostic-core.h (internal_error_no_backtrace): New prototype.
	* diagnostic.def (DK_ICE_NOBT): New kind.
	* diagnostic.c (diagnostic_action_after_output): Handle DK_ICE_NOBT
	like DK_ICE, but never print backtrace.
	(diagnostic_report_diagnostic): Handle DK_ICE_NOBT like DK_ICE.
	(internal_error_no_backtrace): New function.
	* gcc.c (execute): Use internal_error_no_backtrace instead of
	internal_error.
fortran/
	* gfc-diagnostic.def (DK_ICE_NOBT): New kind.

From-SVN: r220030