expr.c (expand_expr): Change ">" to ">=" making MOVE_RATIO use consistent.

expr.c (expand_expr): Change ">" to ">=" making MOVE_RATIO use consistent.

        * expr.c (expand_expr): Change ">" to ">=" making MOVE_RATIO use
        consistent.
        * tm.texi (Costs): Say MOVE_RATIO is number of mem-mem move
        *sequences* *below* which scalar moves will be used.

From-SVN: r22107