Add Satoshi Nakamoto copyright back.
Add Satoshi Nakamoto copyright back.

In the very first posting of the code on SourceForge, there was this:
Copyright (c) 2009 Satoshi Nakamoto Under MIT License, that should be
included.

see

https://github.com/trottier/original-bitcoin/blob/master/src/license.txt

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BitcoinUnlimited/BitcoinUnlimited,Justaphf/BitcoinUnlimited,Justaphf/BitcoinUnlimited,Justaphf/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,Justaphf/BitcoinUnlimited,Justaphf/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,Justaphf/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited