Bug#245544: Set::IntSpan

[Nicholas Bamber]

Chris,
    I am glad you found your own solution to this problem and I am sorry 
noone got back to up you about it.

    I could forward this upstream for discussion but I will not for a 
number of reasons.
1.) You could have given more explanation as to why you need large integers.
2.) Although "bigint" is supposed to be transparent I am not to sure 
about potential implications. Some benchmark test results with and 
without bigint would be  a big help.
3.) There are some dependencies on this module.

I was going to tag this moreinfo, but given the amount of time that has 
passed I will tag it wontfix. That can always be changed if more 
evidence emerges.