* diagnostic.c (real_abort): New.
	(diagnostic_report_diagnostic): Call real_abort on error.
	* diagnostic.h (diagnostic_abort_on_error): New.
	(struct diagnostic_context): Add abort_on_error field.
	* toplev.c (setup_core_dumping): New.
	(decode_d_option): Handle 'H' case.
	* doc/invoke.texi (Debugging Options): Document -dH.

From-SVN: r62753