Cleaning up this tool and making it more performant in regards to byt…

[ManEelyMan]

…e array copying.

[matterpreter]

Thanks for the PR! Do you have performance stats? I'm curious to see how expensive the array copies are.

[ManEelyMan]

No problem! A couple things:

1. I originally meant for this to be PR'ed into my main branch not here, but when I saw I PR'ed to your repo, I figured I'd leave it in the off chance you found it helpful. :) Since it was meant for personal use, I didn't necessarily "play nice" with it and removed some extra things (like debug statements) I'm sure you want around just to have cleaner (IMO) code.
2. I don't have any performance stats. I'd wager byte-handling is considerably faster by eliminating most in-memory copies, but the reality is that the bottleneck in this entire process is going to be invoking the MpCmdRun.exe, making these optimizations overall inconsequential. :) However, as per item number 1, above, I did this for my OCD. :P