Fix cache building of the GET functor

• Fix base class constructor call in LoKi::TES::Get The wrong base class constructor call prevented correct cpp code generation.
• Add include in LoKiHlt.h needed for cache generation

• [2017-11-11 00:04] Validation started with lhcb-2017-patches#200

merged

mentioned in commit 4f795146

mentioned in commit 1994e9b2

mentioned in merge request !950 (merged)

mentioned in commit efe08095

mentioned in commit Moore@db6a0f90