Improve SGInputLoaderCfg and set it up for InDetOverlay
Improve SGInputLoaderCfg
to be able to parse standard formats of input/outputs strings, either separated by #
or /
.
Add Input.FailOnUnknownCollections
to prevent loading missing input and Scheduler.AutoLoadUnmetDependencies
to not schedule loading items automatically.
Also set it up for InDetOverlay
.