* Fixed a bug in the 'pypad.update.shouldBeProcessed()' method
that caused log selection directives to be ignored.
* Refactored the 'pypad_icecast2.py' script to work properly with
the fixed 'pypad.update.shouldBeProcessed()' method.
* Refactored the 'pypad_shoutcast2.py' script to work properly with
the fixed 'pypad.update.shouldBeProcessed()' method.