System.Array ordering comparisons are not working

[slozier]

System.Array ordering comparisons are raising a SystemError.

For example:

import System
assert System.Array[System.Int32]([0]) < System.Array[System.Int32]([1])

currently raises

SystemError: Compare

Note that this used to work in 2.7. At the very least it, if we don't want to support it, it should be raising a TypeError.

Also, trying to compare arrays of different lengths we get a ValueError:

import System
System.Array[System.Int32]([0]) < System.Array[System.Int32]([1,2])

ValueError: Object is not a array with the same number of elements as the array to compare it to.
Parameter name: other

I'm guessing this error comes from the .NET comparison? Probably preferable to not throw if we're going to be supporting ordering comparisons.

#1821