re PR middle-end/60292 (ICE: in fill_vec_av_set, at sel-sched.c:3863 with -m64 after r206174 on powerpc-apple-darwin9.8.0)

	PR rtl-optimization/60292
	* sel-sched.c (fill_vec_av_set): Do not reset target availability
	bit fot the fence instruction.

From-SVN: r208109