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.

# use glob syntax.
syntax: glob

*~
*.py?
.*.swp
.swp
doc/build