Modernize LoKiCore
- simplify LoKi::AddRef
- simplify LoKi::Const
- consolidate AlgFunctors: use baseclass + template implementation with a small struct to specialize
- add variadic min, max functors
- constrain FunctorArray constructor so it does not classify as copy c'tor
- generalize BinaryOp, and use it instead of Combination
- remove deprecated LoKi::select
- use Synced to guarantee that non-const static data is never accessed without lock
Edited by Gerhard Raven