2019-01-15 Rec v19r4p1

This version uses Gaudi v27r1, LHCb v40r3p1 and Lbcom v18r3p1 (and LCG_84 with ROOT 6.06.02)

This version is released on `hlt2016-patches` branch.

Built relative to Rec v19r4, with the following changes:

Bug fixes

• Fix illegal access in PrChecker2, !1376 (@rmatev)

Code modernisations and cleanups

• Remove obsolete file needed by SVN checkout, !1358 (@cattanem)

• Remove obsolete CMT files, !1357 (@cattanem)

• VeloCCEScanMonitor: fix Wsign-compare warning, !1356 (@cattanem)
  Cherry picked from !350 on 2016-patches

Changes to tests

• Remove obsolete configurables test, was checking integrity of SVN project recursive checkout, !1353 (@cattanem)

• do not use git conddb in lumi0conddbchecker test, !1354 (@cattanem)
  cherry-picked from !536