Log Message:
ckmame: update to 2.0.

2.0 (2022-05-31)
=================
* Support for configuration file and multiple sets.
* Overhaul command line options.
* Automatically update ROM DB.
* Speed up ROM sets with many files shared among many games.
* Improve parse error reporting, don't create mamedb for dats with errors, fix \ 
inconsistencies in dat.
* Improve detector support.