unroll.c: Include predict.h.

unroll.c: Include predict.h.

	* unroll.c: Include predict.h.
	(unroll_loop): Drop prediction notes on preconditioning.
	* predict.def (PRED_LOOP_PRECONDITIONG, PRED_LOOP_CONDITION):
	New; add comments on the others.
	* Makefile.in: (unroll.o): Add dependancy on predict.h.
	* loop.c (strength_reduce): Fix branch prediction.

	* stmt.c (emit_case_nodes): Optimize test whether index is in given
	interval.

	* predict.c (estimate_probability): Do not bail out early
	when note is present.
	(combine_predictions_for_insn): Fix note removal code.

From-SVN: r43441