Delete Bad Frames on Backburner

This script allows you to delete bad frames that were rendered by a given
node on backburner. This happens if the render farm is heterogeneous
(= different software or hardware configuration on the render nodes). Instead
of manually deleting the frames, it will delete all frames that were rendered
by a certain machine for a certain job. To find out which frames need to be
deleted it connects to the manager and fetches information about every
rendered frame. If the frame was rendered by the machine that has the name
specified by the user, it will be deleted. Afterwards, the job can be restarted
with "skip existing frames" option activated to only rerender the missing frames.

Attention:
Please use this on your own risk and make backups of the directory. There is
no undo function ! I thoroughly tested the script and it works fine within our
pipeline but I do not take any responsibility for deleted files.

The verbose messages option in the ui can be set to get detailed information
about which files are going to be deleted.

Configuration:
1. Set the subnet mask under configuration (see section below)
2. run script (Menu -> MAXScript -> Run Script)
3. Enter job and machine name.
4. Hit delete.