Support OrdinalRange in select for Vectors.

ref #6538, #6534

````
julia> a=[1:10];

julia> select(a,1:2:8)
4-element Array{Int64,1}:
 1
 3
 5
 7

julia> select(a, 2:-1:1)
2-element Array{Int64,1}:
 2
 1
````