Create a new ValueID class - BitSet

[GoogleCodeExporter]

as a lot of vendors are releasing products with configs that use bitsets to 
setup various features, we should probably also implement a BitSet ValueID 
class.

Preferably maybe just a wrapper around the Byte type at the moment (to maintain 
backwards compatibility) but with the featureset of the list type (so we can 
specify which bits do what, without resorting to the help/documentation and a 
decimal to binary conversion - which is hard for the average user :)

Original issue reported on code.google.com by jus...@dynam.ac on 4 Apr 2014 at 2:31