* tree-vectorizer.h (verbosity_levels): Add new verbosity level
        REPORT_COST.
        * tree-vect-transform.c (vect_estimate_min_profitable_iters): Change
        verbosity level to REPORT_COST.
        (vect_model_reduction_cost): Likewise.
        (vect_model_induction_cost): Likewise.
        (vect_model_simple_cost): likewise.
        (vect_model_store_cost): likewise.
        (vect_model_load_cost): likewise.
        (conservative_cost_threshold): Likewise. Remove print.

From-SVN: r131016