2019-07-18 Lbcom v30r5

This version uses LHCb v50r5, Gaudi v32r1 and LCG_96 with ROOT 6.18.00.

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p> This version is released on master branch.

Built relative to Lbcom v30r4, with the following changes:

Enhancements

• Minor changes to support alternative SIMD abstraction layers (e.g. ve) in the RICH, !361 (@jonrob)
  Associated to lhcb/LHCb!1932

Code modernisations and cleanups

• Rich : Migrate away from GaudiAlg Error(...) and Warning(...) base class methods to MsgCounter instances, !367 (@jonrob)
  Requires lhcb/LHCb!2018

• RICH - Adapt to change in return value from RichRayTracing, !366 (@jonrob)
  Adapts to lhcb/LHCb!1969