VMM//{,cli/}Handler: Reworked configuration related parts. Renamed attributes _Cfg -> _cfg; _cfgFileName -> _cfg_fname. Renamed methods __chkCfgFile -> __check_cfg_file; __findCfgFile -> __find_cfg_file. Added missing docstrings.

[install]
compile = 1
optimize = 1

[sdist]
formats = bztar