Ongoing effort to get Muon standalone working. Now added ability to set arguments, to be used in ART tests. Found some missing configuration which is now added. And a protection against a rare crash.

Fixes for configutation of MooSegmentCombinationFinder to allow it to be overridden properly for NCB
Added missing MuonChamberHoleRecoveryToolCfg for track building
General fixes to make the concurrency configurable at runtime
Added some args to allow new threaded tests to work
Whitespace fixes, and also a protection against crashing for ATLASRECTS-5087 (real fix still under investigation).