Prepare for taking MF configurations from DB #6602
Merged
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Includes:
-Tools to create .db files for standard configurations
-Fix for one numerical stability problem with geometries imported to DB. The problem did not affect existing configurations (with geometry coming from xml), and the fix was regression-tested.
This fix is needed to be able to finally switch to reading MF geometry and configuration from DB, which will happen in a future (pre)release once a GT with all required payloads becomes available.
This is the same as #6514, but for CMSSW_7_4_X. Will be merged automatically since the former is fully signed.