Change LCG default version from 105c to 106c
This requires:
- lhcb/Detector!674 (merged)
- lhcb/LHCb!4702 (merged)
- lhcb/LHCb!4885 (merged)
- lhcb/LHCb!4900 (merged)
- lhcb/Run2Support!66 (merged)
- lhcb/Rec!4226 (merged)
- lhcb/Rec!4257 (merged)
- lhcb/Allen!1862 (merged)
- lhcb/Moore!4240 (merged)
- lhcb/Moore!4293 (merged)
- lhcb/Moore!4305 (merged)
- lhcb/DaVinci!1160 (merged)
- lhcb/DaVinci!1223 (merged)
- lhcb/LHCbIntegrationTests!97 (merged)
- lhcb/Gauss!1140 (closed)
- Gaussino/gaussinoextlibs!22 (merged)
- Gaussino/Gaussino!179 (merged)
- Gaussino/Gaussino!184 (merged)