efficient subset query for ranges

[mcabbott]

issubset(1:5, 1:10^18) gives an OutOfMemoryError() on Julia 1.1, although it works on 0.6.

From the source I see #26198 is the change, which creates a Set when the 2nd vector has length > 70, and #28871 disables this for objects without a length. I guess the minimal fix is also to disable this for ranges.

But there is no need to do this by iteration. I assumed that because intersect(1:10, 1:10^18) knows to return a range, this would behave similarly. Should we add similar methods to issubset?

[rfourquet]

In the general case (when the first argument is not a range), this is fixed by #32003.

[StefanKarpinski]

Seems like some specialized methods for this would make sense.