[xbmc] Add gotham-python-monitor-onclean.diff.

Adds onClean{Started,Finished} callbacks to the Python API.
Backports my XBMC pull request 4877.
updates
Merge pull request #9 from anaconda/xbmc-gotham-onclean

[xbmc] Add gotham-python-monitor-onclean.diff.
Drop Frodo patches.