2021-07-06 Rec v23r8

This version uses Lbcom v22r3, LHCb v44r8, Gaudi v29r5 and LCG 93 with ROOT 6.12.06.

This version is released on 2018-patches branch. It is intended for 2018 incremental stripping (S34r0p2) and stripping in 2018 simulation workflows. Builds with gcc62 on centos7.

Built relative to Rec v23r7, with the following changes:

Code cleanups and changes to tests modernisation cleanup testing

• Fix an unprotected DEBUG, !2378 (@cattanem)