Re #8566. Fixing small bug in OneRun script.
Re #8566. Adding ability to parse multiple config files.
Re #8566. Adding first pass config of generic topaz config.
Re #8410. Allow specifying multiple config files on the command line.
Re #8554 and 8566. Fixed bug found in testing.

Cherry-picking from master.

Conflicts:

	Code/Mantid/scripts/SCD_Reduction/ReduceSCD_OneRun.py
Re #8566. Putting back the cylindrical fix.
Merge remote branch 'origin/feature/8566_scd_reduce_config'