Default module setting for easy usage of the logging functions

[SirMoM]

This allows to set a default module and using it without specifying it every time.

Example:

var out_strats = [Logger.STRATEGY_PRINT, Logger.STRATEGY_PRINT, Logger.STRATEGY_PRINT, Logger.STRATEGY_PRINT, Logger.STRATEGY_PRINT]

Logger.add_module("App", Logger.VERBOSE, out_strats)
Logger.default_module = "App"

Logger.debug("No file selected!")
Logger.info("Could not open file " + path)

This logs:

[DEBUG] [App] No file selected!
[INFO] [App] Could not open file 404

[SirMoM]

So I fixed some sloppiness on my part. This should be alright now.

[akien-mga]

Thanks!