Clean-up old Windows binaries on open instead of cleaning up on shutdown to close #5

[phrack]

Sorry for the total change to the file, the format kept breaking on me so I just ran a formatter on the entire file.

My changes are from lines 112 - 129 and 399 - 407.

[vonnieda]

This looks great. I have some small requests:

1. Can you try to resubmit without the reformatting? If this is a pain I can do it for you. As of right now it's too hard to tell what changed.
2. Can you change the temp directory prefix to openpnp_opencv or org.openpnp.opencv or something else more specific? I just want to make sure we don't accidentally delete something that isn't ours.

Thanks,
Jason

[phrack]

Hmm, has the old formatting now except for my additions but it doesn't fix the diff since I commited over it already in my fork. Let me close this one and try from a fresh fork.