re PR rtl-optimization/85638 (build failure for Ada runtime with SJLJ exceptions...

re PR rtl-optimization/85638 (build failure for Ada runtime with SJLJ exceptions on x86)

	PR rtl-optimization/85638
	* bb-reorder.c: Include common/common-target.h.
	(create_forwarder_block): New function extracted from...
	(fix_up_crossing_landing_pad): ...here.  Rename into...
	(dw2_fix_up_crossing_landing_pad): ...this.
	(sjlj_fix_up_crossing_landing_pad): New function.
	(find_rarely_executed_basic_blocks_and_crossing_edges): In SJLJ mode,
	call sjlj_fix_up_crossing_landing_pad if there are incoming EH edges
	from both partitions and exit the loop after one iteration.

From-SVN: r260070