RFR: 983: Github commit links 404

[Tim Bell]

On Thu, 22 Apr 2021 22:38:29 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

> Sometimes our abbreviated commit web links on Github are not working. My guess is that this is caused by collisions. I think the correct fix here is to stop abbreviating commit hashes in links. Github internal links seem to always be full hashes, while pretty printing the link text with an abbreviation. We should adopt the same basic principle.

Marked as reviewed by tbell (Reviewer).

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PR: https://git.openjdk.java.net/skara/pull/1136