A little bit of code cleaning.
Added a new log leve, vverb. Also, removed global verbosity variable (not needed).
Merge branch 'master' of http://github.com/Wintermute0110/XBMC-rom-utils
Modernised this script to use the logging functions. Other small improvements here and there. New command list-drivers.
Implemented several verbosity levels (-vv). Log filename can now be configured. Improved the log for MAME filters.
Minor changes
Merged some code bits from xru-mame about the logger functions
Relocated function code
In the middle of a refurbishment, copying code from xru-mame.py