Prepare release v40r3p1
Development release for the post-TS1 2016 data-taking and simulation. It includes the code for prescaling offline the turbo stream.
It is based on Gaudi v27r1, LHCb v40r2, Rec v19r3p1, Phys v21r5, Analysis v16r3 and Stripping v10r4p2. Uses LCG_84 with ROOT 6.06.02.