[copyright] add MIT License copyright header to remaining Python files #8702

The edit history on these three files are from users:

contrib/devtools/security-check.py (@ChoHag, @laanwj, @theuni, @calebogden) contrib/devtools/test-security-check.py (@ChoHag, @laanwj) share/qt/extract_strings_qt.py (@ChoHag, @mitchellcash, @laanwj, @luke-jr, @brandondahler, Phillip Kaufmann, @theuni)

As per the threads for PR #7300 and #8676, there are ACKs to add these headers from all but Philip Kaufmann and @ChoHag.

The specific edits: @ChoHag edited security-check.py in 7b01ce254cfa0e8ae7e57a72c57e8ae89f3c1829 and 873e81f89b3197580aca3dd4a591d00e41696a89 @ChoHag edited test-security-check.py in 873e81f89b3197580aca3dd4a591d00e41696a89 @ChoHag edited extract_strings_qt.py in 873e81f89b3197580aca3dd4a591d00e41696a89 Philip Kaufmann edited extract_strings_qt.py in 01cbaeb62fa3c8b046efe6dd1bd2c918f661566a

I will make an effort to reach out via email.

It has been a couple days, and I haven't heard back. For the record, the emails that were sent to the addresses listed in the git commits:

https://gist.github.com/isle2983/1f4bce2eb202553c3e209be5b6606745 https://gist.github.com/isle2983/e84b22121854c56cfe3829f986bcfdf6

If I hear anything, I will post it here ASAP.

The edits to these files are are all 1-liners (7b01ce254cfa0e8ae7e57a72c57e8ae89f3c1829, 873e81f89b3197580aca3dd4a591d00e41696a89, 01cbaeb62fa3c8b046efe6dd1bd2c918f661566a). IANAL, but I think it is fairly reasonable to conclude that there aren't any IP violations contained in those edits.

I will leave it up to the project leads for whether this is appropriate to merge.

Thanks for trying to organize this. As the original author of security-check.py and test-security-check.sh I think my agreement to add an copyright header is most important, as I should have done that in the first place. The other changes, apart from @theuni's, who also agrees with the MIT license, are just typo and comment fixes so I'm fine with doing this without their agreement.

Same for share/qt/extract_strings_qt.py - except that @luke-jr significantly contributed there too, but he agreed to in previous related pulls. So let's just move on here.