all: update license headers and AUTHORS

[ronething-bot]

• Add license header to files that do not have a license header
• Update AUTHORS

[MariusVanDerWijden]

We don't update the year in the license header. Please remove that, the updated AUTHORS file is something that we can merge imo

[ronething-bot]

We don't update the year in the license header.

@MariusVanDerWijden Hi, thanks for your review comment.

The year modification of the license header is due to this section of logic processing, ref:

go-ethereum/build/update-license.go

Lines 362 to 364 in 25aa8f6

	if y < info.Year {
	info.Year = y
	}

Running build/update-license.go will automatically modify it, and I will revert the modified year of the license header later, or only keep the modifications to the AUTHORS file.

[MariusVanDerWijden]

SGTM

[ronething-bot]

@rjl493456442 PTAL, thanks.

[fjl]

It's good to update, but the AUTHORS file requires some manual review. Specifically, we need to ensure that entries are unique. There are two kinds of entries in the file: name + email, and github users. When people contribute via GitHub, it usually uses their GitHub username as the committer. However, some people also push commits with their own email address, and this can lead to duplicates in AUTHORS. The way to resolve that is adding entries into the .mailmap file. I usually update this file whenever we update AUTHORS to ensure there are no obvious duplicates.

[ronething-bot]

The way to resolve that is adding entries into the .mailmap file. I usually update this file whenever we update AUTHORS to ensure there are no obvious duplicates.

@fjl I have updated the duplicate items to .mailmap file, please review the latest commit, thanks

ref: 7cd5941

[fjl]

Thanks. I will do another pass myself later.