* targhooks.c (default_except_unwind_info): Remove
	MUST_USE_SJLJ_EXCEPTIONS case.
	* config/h8300/h8300.h (MUST_USE_SJLJ_EXCEPTIONS): Delete.
	* config/h8300/h8300.c (TARGET_EXCEPT_UNWIND_INFO): Define.
	* doc/tm.texi.in (MUST_USE_SJLJ_EXCEPTIONS): Delete.
	* doc/tm.texi: Regenerate.
	* system.h (MUST_USE_SJLJ_EXCEPTIONS): Poison.

From-SVN: r167131