I'm afraid the context you've supplied isn't really enough. I suspect that library has a specialized meaning related to IT, 'repository of a set of values used by the system in executing this program'. A program may 'link to' various libraries of this kind, so that it can use standard variables of some kind.
'Scoping' would be something defined by the software - possibly to do with estimating the scope of some aspect of the job to be done. The values used in doing this job would be stored in a 'scoping library'. (note - this is not clear or elegant use of language, but (regrettably, in my view) it's the sort of thing software developers do! )