vcs: improve git->hg converter

[edvbld]

Hi all,

please review this patch that significantly improves the GitToHgConverter. The new converter handles all OpenJDK Git repositories and also handles additional Git tags. I also improved the testing by quite a bit, the verification is much more strict and I added a bunch of more tests. I also added some @Disabled tests (since they require an internet connection), but they are still useful for running locally when working on the converter.

Testing:

• make test passes on Linux x64
• Added a number of new unit tests

Thanks,
Erik

---

Progress

• Change must not contain extraneous whitespace
• Change must be properly reviewed

Reviewers

• Robin Westberg (rwestberg - Reviewer) ⚠️ Review applies to b957495

Download

$ git fetch https://git.openjdk.java.net/skara pull/736/head:pull/736
$ git checkout pull/736

[bridgekeeper]

👋 Welcome back ehelin! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request.

[mlbridge]

Webrevs

• 01: Full - Incremental (28a0f36)
• 00: Full (b957495)

[rwestberg]

Looks good, just some minor comments!

[openjdk]

@edvbld This change now passes all automated pre-integration checks. When the change also fulfills all project specific requirements, type /integrate in a new comment to proceed. After integration, the commit message will be:

vcs: improve git->hg converter

Reviewed-by: rwestberg

• If you would like to add a summary, use the /summary command.
• To credit additional contributors, use the /contributor command.
• To add additional solved issues, use the /issue command.

There are currently no new commits on the master branch since the last update of the source branch of this PR. If another commit should be pushed before you perform the /integrate command, your PR will be automatically rebased. If you would like to avoid potential automatic rebasing, specify the current head hash when integrating, like this: /integrate 269027247e5c5778560d3031476dfd0ece4e57d3.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[edvbld]

/integrate

[openjdk]

@edvbld
Pushed as commit 4ba695f.