Decouple lhcb-gaussino-fastsim

This is needed because we would d like to test Geant4 new cmake with lhcb-gaussino, but it won't work with all the developments related to fast simulation in Gaussino, and in particular, Geant4 10.7. Therefore, the lhcb-gaussino-fastsim label cannot be added in the same MRs as lhcb-gaussino.

I added also a commit that decouples fast simulation developments from Futurev4 by targeting a new branch FASTSIM for Gaussino & Gauss.

assigned to @gcorti

added 1 commit

• 8a709f21 - Test fast simulation with a dedicated version: FASTSIM

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changed title from Decouple lhcb-gaussino-fastsim from lhcb-gaussino label to Decouple lhcb-gaussino-fastsim

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merged

mentioned in commit 2218dca3